Single X Duplication Extension (#13373)

* Multi-nozzle selective duplication
* Use a bit-mask, reduce stepper_indirection.h size
* Tweak the multi-nozzle duplication description
* Use 'S' as a bool in M605
* Add HAS_DUPLICATION_MODE conditional
* Remove '_MODE' from the option name
* M605 in the style of Stacker M280
* Also include direct mask style (P)

Marlin/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

Marlin/src/feature/runout.h

@@ -230,19 +230,22 @@ class FilamentSensorBase {
     private:
       static inline bool poll_runout_state(const uint8_t extruder) {
         const uint8_t runout_states = poll_runout_states();
+
         #if NUM_RUNOUT_SENSORS == 1
           UNUSED(extruder);
-          return runout_states;                     // A single sensor applying to all extruders
-        #else
-          #if ENABLED(DUAL_X_CARRIAGE)
-            if (dual_x_carriage_mode == DXC_DUPLICATION_MODE || dual_x_carriage_mode == DXC_SCALED_DUPLICATION_MODE)
-              return runout_states;                 // Any extruder
-            else
-          #elif ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
-            if (extruder_duplication_enabled)
-              return runout_states;                 // Any extruder
-            else
         #endif
+
+        if (true
+          #if NUM_RUNOUT_SENSORS > 1
+            #if ENABLED(DUAL_X_CARRIAGE)
+              && (dual_x_carriage_mode == DXC_DUPLICATION_MODE || dual_x_carriage_mode == DXC_SCALED_DUPLICATION_MODE)
+            #elif ENABLED(MULTI_NOZZLE_DUPLICATION)
+              && extruder_duplication_enabled
+            #endif
+          #endif
+        ) return runout_states;               // Any extruder
+
+        #if NUM_RUNOUT_SENSORS > 1
           return TEST(runout_states, extruder); // Specific extruder
         #endif
       }

Marlin/src/gcode/calibrate/G28.cpp

@@ -258,7 +258,7 @@ void GcodeSuite::G28(const bool always_home_all) {
     tool_change(0, 0, true);
   #endif
 
-  #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+  #if HAS_DUPLICATION_MODE
     extruder_duplication_enabled = false;
   #endif
 

Marlin/src/gcode/calibrate/G34_M422.cpp

@@ -119,7 +119,7 @@ void GcodeSuite::G34() {
       tool_change(0, 0, true);
     #endif
 
-    #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+    #if HAS_DUPLICATION_MODE
       extruder_duplication_enabled = false;
     #endif
 

Marlin/src/gcode/control/M605.cpp

@@ -22,7 +22,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#if HAS_DUPLICATION_MODE
 
 //#define DEBUG_DXC_MODE
 
@@ -59,6 +59,8 @@
       const DualXMode previous_mode = dual_x_carriage_mode;
 
       dual_x_carriage_mode = (DualXMode)parser.value_byte();
+
+      #if 0
       scaled_duplication_mode = false;
 
       if (dual_x_carriage_mode == DXC_SCALED_DUPLICATION_MODE) {
@@ -77,6 +79,7 @@
         }
         return;
       }
+      #endif
 
       switch (dual_x_carriage_mode) {
         case DXC_FULL_CONTROL_MODE:
@@ -147,16 +150,36 @@
     #endif // DEBUG_DXC_MODE
   }
 
-#elif ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#elif ENABLED(MULTI_NOZZLE_DUPLICATION)
 
+  /**
+   * M605: Set multi-nozzle duplication mode
+   *
+   *  S2       - Enable duplication mode
+   *  P[mask]  - Bit-mask of nozzles to include in the duplication set.
+   *             A value of 0 disables duplication.
+   *  E[index] - Last nozzle index to include in the duplication set.
+   *             A value of 0 disables duplication.
+   */
   void GcodeSuite::M605() {
+    if (parser.seen("EPS")) {
       planner.synchronize();
-    extruder_duplication_enabled = parser.intval('S') == (int)DXC_DUPLICATION_MODE;
+      if (parser.seenval('P')) duplication_e_mask = parser.value_int();   // Set the mask directly
+      else if (parser.seenval('E')) duplication_e_mask = pow(2, e + 1) - 1;    // Set the mask by E index
+      const bool ena = (2 == parser.intval('S', extruder_duplication_enabled ? 2 : 0));
+      extruder_duplication_enabled = ena && (duplication_e_mask >= 3);
+    }
     SERIAL_ECHO_START();
     SERIAL_ECHOPGM(MSG_DUPLICATION_MODE);
-    serialprintln_onoff(extruder_duplication_enabled);
+    serialprint_onoff(extruder_duplication_enabled);
+    if (ena) {
+      SERIAL_ECHOPGM(" ( ");
+      HOTEND_LOOP() if (TEST(duplication_e_mask, e)) { SERIAL_ECHO(e); SERIAL_CHAR(' '); }
+      SERIAL_CHAR(')');
+    }
+    SERIAL_EOL();
   }
 
-#endif // DUAL_NOZZLE_DUPLICATION_MODE
+#endif // MULTI_NOZZLE_DUPLICATION
 
-#endif // DUAL_X_CARRIAGE || DUAL_NOZZLE_DUPLICATION_MODE
+#endif // HAS_DUPICATION_MODE

Marlin/src/gcode/gcode.cpp

@@ -650,7 +650,7 @@ void GcodeSuite::process_parsed_command(
         case 603: M603(); break;                                  // M603: Configure Filament Change
       #endif
 
-      #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+      #if HAS_DUPLICATION_MODE
         case 605: M605(); break;                                  // M605: Set Dual X Carriage movement mode
       #endif
 

Marlin/src/gcode/gcode.h

@@ -769,7 +769,7 @@ private:
     static void M603();
   #endif
 
-  #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+  #if HAS_DUPLICATION_MODE
     static void M605();
   #endif
 

Marlin/src/inc/Conditionals_LCD.h

@@ -435,6 +435,7 @@
 #define SWITCHING_NOZZLE_TWO_SERVOS defined(SWITCHING_NOZZLE_E1_SERVO_NR)
 
 #define HAS_HOTEND_OFFSET (HOTENDS > 1)
+#define HAS_DUPLICATION_MODE (ENABLED(DUAL_X_CARRIAGE) || ENABLED(MULTI_NOZZLE_DUPLICATION))
 
 /**
  * DISTINCT_E_FACTORS affects how some E factors are accessed

Marlin/src/inc/SanityCheck.h

@@ -345,6 +345,8 @@
   #error "TMC_Z_CALIBRATION has been deprecated in favor of Z_STEPPER_AUTO_ALIGN. Please update your configuration."
 #elif defined(Z_MIN_PROBE_ENDSTOP)
   #error "Z_MIN_PROBE_ENDSTOP is no longer required. Please remove it from Configuration.h."
+#elif defined(DUAL_NOZZLE_DUPLICATION_MODE)
+  #error "DUAL_NOZZLE_DUPLICATION_MODE is now MULTI_NOZZLE_DUPLICATION. Please update your configuration."
 #endif
 
 #define BOARD_MKS_13     -47
@@ -1444,19 +1446,19 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
 #endif
 
 /**
- * Basic 2-nozzle duplication mode
+ * Basic multi hotend duplication mode
  */
-#if ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#if ENABLED(MULTI_NOZZLE_DUPLICATION)
-  #if HOTENDS != 2
+  #if HOTENDS < 2
-    #error "DUAL_NOZZLE_DUPLICATION_MODE requires exactly 2 hotends."
+    #error "MULTI_NOZZLE_DUPLICATION requires 2 or more hotends."
   #elif ENABLED(DUAL_X_CARRIAGE)
-    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with DUAL_X_CARRIAGE."
+    #error "MULTI_NOZZLE_DUPLICATION is incompatible with DUAL_X_CARRIAGE."
   #elif ENABLED(SINGLENOZZLE)
-    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with SINGLENOZZLE."
+    #error "MULTI_NOZZLE_DUPLICATION is incompatible with SINGLENOZZLE."
   #elif ENABLED(MIXING_EXTRUDER)
-    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with MIXING_EXTRUDER."
+    #error "MULTI_NOZZLE_DUPLICATION is incompatible with MIXING_EXTRUDER."
   #elif ENABLED(SWITCHING_EXTRUDER)
-    #error "DUAL_NOZZLE_DUPLICATION_MODE is incompatible with SWITCHING_EXTRUDER."
+    #error "MULTI_NOZZLE_DUPLICATION is incompatible with SWITCHING_EXTRUDER."
   #endif
 #endif
 

Marlin/src/module/motion.cpp

@@ -872,9 +872,13 @@ void clamp_to_software_endstops(float target[XYZ]) {
 #endif // !IS_KINEMATIC
 #endif // !UBL_SEGMENTED
 
-#if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#if HAS_DUPLICATION_MODE
-  bool extruder_duplication_enabled = false,                              // Used in Dual X mode 2 & 3
+  bool extruder_duplication_enabled;
-       scaled_duplication_mode      = false;                              // Used in Dual X mode 2 & 3
+       //scaled_duplication_mode;
+#endif
+
+#if ENABLED(MULTI_NOZZLE_DUPLICATION) && HOTENDS > 2
+  uint8_t duplication_e_mask; // = 0
 #endif
 
 #if ENABLED(DUAL_X_CARRIAGE)

Marlin/src/module/motion.h

@@ -313,11 +313,15 @@ void homeaxis(const AxisEnum axis);
 #endif
 
 /**
- * Dual X Carriage / Dual Nozzle
+ * Duplication mode
  */
-#if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#if HAS_DUPLICATION_MODE
-  extern bool extruder_duplication_enabled,       // Used in Dual X mode 2
+  extern bool extruder_duplication_enabled;       // Used in Dual X mode 2
-              scaled_duplication_mode;            // Used in Dual X mode 3
+              //scaled_duplication_mode;            // Used in Dual X mode 3
+#endif
+
+#if ENABLED(MULTI_NOZZLE_DUPLICATION) && HOTENDS > 2
+  uint8_t duplication_e_mask;
 #endif
 
 /**
@@ -346,7 +350,7 @@ void homeaxis(const AxisEnum axis);
 
   FORCE_INLINE int x_home_dir(const uint8_t extruder) { return extruder ? X2_HOME_DIR : X_HOME_DIR; }
 
-#elif ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+#elif ENABLED(MULTI_NOZZLE_DUPLICATION)
 
   enum DualXMode : char {
     DXC_DUPLICATION_MODE = 2

Marlin/src/module/planner.cpp

@@ -1996,7 +1996,7 @@ bool Planner::_populate_block(block_t * const block, bool split_move,
           #endif // EXTRUDERS > 1
           enable_E0();
           g_uc_extruder_last_move[0] = (BLOCK_BUFFER_SIZE) * 2;
-          #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
+          #if HAS_DUPLICATION_MODE
             if (extruder_duplication_enabled) {
               enable_E1();
               g_uc_extruder_last_move[1] = (BLOCK_BUFFER_SIZE) * 2;

Marlin/src/module/stepper_indirection.h

@@ -593,47 +593,79 @@ void reset_stepper_drivers();    // Called by settings.load / settings.reset
   #define E_STEP_WRITE(E,V) E0_STEP_WRITE(V)
   #define   NORM_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 0) ? !INVERT_E0_DIR:  INVERT_E0_DIR); }while(0)
   #define    REV_E_DIR(E)   do{ E0_DIR_WRITE(TEST(E, 0) ?  INVERT_E0_DIR: !INVERT_E0_DIR); }while(0)
-#elif E_STEPPERS > 5
+
-  #define E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); break; case 4: E4_STEP_WRITE(V); case 5: E5_STEP_WRITE(V); } }while(0)
-  #define   NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); case 5: E5_DIR_WRITE(!INVERT_E5_DIR); } }while(0)
-  #define    REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); break; case 4: E4_DIR_WRITE( INVERT_E4_DIR); case 5: E5_DIR_WRITE( INVERT_E5_DIR); } }while(0)
-#elif E_STEPPERS > 4
-  #define E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); break; case 4: E4_STEP_WRITE(V); } }while(0)
-  #define   NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); } }while(0)
-  #define    REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); break; case 4: E4_DIR_WRITE( INVERT_E4_DIR); } }while(0)
-#elif E_STEPPERS > 3
-  #define E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); } }while(0)
-  #define   NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); } }while(0)
-  #define    REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); } }while(0)
-#elif E_STEPPERS > 2
-  #define E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); } }while(0)
-  #define   NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); } }while(0)
-  #define    REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); } }while(0)
 #elif E_STEPPERS > 1
-  #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
 
-    #define E_STEP_WRITE(E,V) do{ if (extruder_duplication_enabled)  { E0_STEP_WRITE(V); E1_STEP_WRITE(V); } \
+  #if E_STEPPERS > 5
-                                                  else if ((E) == 0) { E0_STEP_WRITE(V); } \
+    #define _E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); break; case 4: E4_STEP_WRITE(V); case 5: E5_STEP_WRITE(V); } }while(0)
-                                                  else               { E1_STEP_WRITE(V); } }while(0)
+    #define   _NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); case 5: E5_DIR_WRITE(!INVERT_E5_DIR); } }while(0)
-
+    #define    _REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); break; case 4: E4_DIR_WRITE( INVERT_E4_DIR); case 5: E5_DIR_WRITE( INVERT_E5_DIR); } }while(0)
-    #define   NORM_E_DIR(E)   do{ if (extruder_duplication_enabled)  { E0_DIR_WRITE(!INVERT_E0_DIR); E1_DIR_WRITE(!INVERT_E1_DIR); } \
+  #elif E_STEPPERS > 4
-                                                  else if ((E) == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } \
+    #define _E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); break; case 4: E4_STEP_WRITE(V); } }while(0)
-                                                  else               { E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
+    #define   _NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); break; case 4: E4_DIR_WRITE(!INVERT_E4_DIR); } }while(0)
-
+    #define    _REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); break; case 4: E4_DIR_WRITE( INVERT_E4_DIR); } }while(0)
-    #define    REV_E_DIR(E)   do{ if (extruder_duplication_enabled)  { E0_DIR_WRITE( INVERT_E0_DIR); E1_DIR_WRITE( INVERT_E1_DIR); } \
+  #elif E_STEPPERS > 3
-                                                  else if ((E) == 0) { E0_DIR_WRITE( INVERT_E0_DIR); } \
+    #define _E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); break; case 3: E3_STEP_WRITE(V); } }while(0)
-                                                  else               { E1_DIR_WRITE( INVERT_E1_DIR); } }while(0)
+    #define   _NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); break; case 3: E3_DIR_WRITE(!INVERT_E3_DIR); } }while(0)
+    #define    _REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); break; case 3: E3_DIR_WRITE( INVERT_E3_DIR); } }while(0)
+  #elif E_STEPPERS > 2
+    #define _E_STEP_WRITE(E,V) do{ switch (E) { case 0: E0_STEP_WRITE(V); break; case 1: E1_STEP_WRITE(V); break; case 2: E2_STEP_WRITE(V); } }while(0)
+    #define   _NORM_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE(!INVERT_E0_DIR); break; case 1: E1_DIR_WRITE(!INVERT_E1_DIR); break; case 2: E2_DIR_WRITE(!INVERT_E2_DIR); } }while(0)
+    #define    _REV_E_DIR(E)   do{ switch (E) { case 0: E0_DIR_WRITE( INVERT_E0_DIR); break; case 1: E1_DIR_WRITE( INVERT_E1_DIR); break; case 2: E2_DIR_WRITE( INVERT_E2_DIR); } }while(0)
   #else
-    #define E_STEP_WRITE(E,V) do{ if (E == 0) { E0_STEP_WRITE(V); } else { E1_STEP_WRITE(V); } }while(0)
+    #define _E_STEP_WRITE(E,V) do{ if (E == 0) { E0_STEP_WRITE(V); } else { E1_STEP_WRITE(V); } }while(0)
-    #define   NORM_E_DIR(E)   do{ if (E == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
+    #define   _NORM_E_DIR(E)   do{ if (E == 0) { E0_DIR_WRITE(!INVERT_E0_DIR); } else { E1_DIR_WRITE(!INVERT_E1_DIR); } }while(0)
-    #define    REV_E_DIR(E)   do{ if (E == 0) { E0_DIR_WRITE( INVERT_E0_DIR); } else { E1_DIR_WRITE( INVERT_E1_DIR); } }while(0)
+    #define    _REV_E_DIR(E)   do{ if (E == 0) { E0_DIR_WRITE( INVERT_E0_DIR); } else { E1_DIR_WRITE( INVERT_E1_DIR); } }while(0)
   #endif
+
+  #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(MULTI_NOZZLE_DUPLICATION)
+
+    #define NDIR(N) _DUPE(DIR,!INVERT_E##N##_DIR)
+    #define RDIR(N) _DUPE(DIR, INVERT_E##N##_DIR)
+    #define E_STEP_WRITE(E,V) do{ if (extruder_duplication_enabled) { DUPE(STEP,V); } else _E_STEP_WRITE(E,V); }while(0)
+
+    #if E_STEPPERS > 2
+      #define _DUPE(N,T,V)    do{ if (duplication_e_mask <= (N)) E##N##_##T##_WRITE(V); }while(0)
+      #if E_STEPPERS > 5
+        #define DUPE(T,V)     do{ _DUPE(0,T,V); _DUPE(1,T,V); _DUPE(2,T,V); _DUPE(3,T,V); _DUPE(4,T,V); _DUPE(5,T,V); }while(0)
+        #define NORM_E_DIR(E) do{ if (extruder_duplication_enabled) { NDIR(0); NDIR(1); NDIR(2); NDIR(3); NDIR(4); NDIR(5); } else _NORM_E_DIR(E); }while(0)
+        #define REV_E_DIR(E)  do{ if (extruder_duplication_enabled) { RDIR(0); RDIR(1); RDIR(2); RDIR(3); RDIR(4); RDIR(5); } else  _REV_E_DIR(E); }while(0)
+      #elif E_STEPPERS > 4
+        #define DUPE(T,V)     do{ _DUPE(0,T,V); _DUPE(1,T,V); _DUPE(2,T,V); _DUPE(3,T,V); _DUPE(4,T,V); }while(0)
+        #define NORM_E_DIR(E) do{ if (extruder_duplication_enabled) { NDIR(0); NDIR(1); NDIR(2); NDIR(3); NDIR(4); } else _NORM_E_DIR(E); }while(0)
+        #define REV_E_DIR(E)  do{ if (extruder_duplication_enabled) { RDIR(0); RDIR(1); RDIR(2); RDIR(3); RDIR(4); } else  _REV_E_DIR(E); }while(0)
+      #elif E_STEPPERS > 3
+        #define DUPE(T,V)     do{ _DUPE(0,T,V); _DUPE(1,T,V); _DUPE(2,T,V); _DUPE(3,T,V); }while(0)
+        #define NORM_E_DIR(E) do{ if (extruder_duplication_enabled) { NDIR(0); NDIR(1); NDIR(2); NDIR(3); } else _NORM_E_DIR(E); }while(0)
+        #define REV_E_DIR(E)  do{ if (extruder_duplication_enabled) { RDIR(0); RDIR(1); RDIR(2); RDIR(3); } else  _REV_E_DIR(E); }while(0)
+      #else
+        #define DUPE(T,V)     do{ _DUPE(0,T,V); _DUPE(1,T,V); _DUPE(2,T,V); }while(0)
+        #define NORM_E_DIR(E) do{ if (extruder_duplication_enabled) { NDIR(0); NDIR(1); NDIR(2); } else _NORM_E_DIR(E); }while(0)
+        #define REV_E_DIR(E)  do{ if (extruder_duplication_enabled) { RDIR(0); RDIR(1); RDIR(2); } else  _REV_E_DIR(E); }while(0)
+      #endif
+    #else
+      #define _DUPE(T,V)    do{ E0_##T##_WRITE(V); E1_##T##_WRITE(V); }while(0)
+      #define DUPE(T,V)  _DUPE(T,V)
+      #define NORM_E_DIR(E) do{ if (extruder_duplication_enabled) { NDIR(0); NDIR(1); } else _NORM_E_DIR(E); }while(0)
+      #define REV_E_DIR(E)  do{ if (extruder_duplication_enabled) { RDIR(0); RDIR(1); } else  _REV_E_DIR(E); }while(0)
+    #endif
+
+  #else
+
+    #define E_STEP_WRITE(E,V) _E_STEP_WRITE(E,V)
+    #define   NORM_E_DIR(E)   _NORM_E_DIR(E)
+    #define    REV_E_DIR(E)   _REV_E_DIR(E)
+
+  #endif
+
 #elif E_STEPPERS
   #define E_STEP_WRITE(E,V) E0_STEP_WRITE(V)
   #define   NORM_E_DIR(E)   E0_DIR_WRITE(!INVERT_E0_DIR)
   #define    REV_E_DIR(E)   E0_DIR_WRITE( INVERT_E0_DIR)
+
 #else
   #define E_STEP_WRITE(E,V) NOOP
   #define   NORM_E_DIR(E)   NOOP
   #define    REV_E_DIR(E)   NOOP
+
 #endif

config/default/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/3DFabXYZ/Migbot/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/AlephObjects/TAZ4/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/AliExpress/UM2pExt/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Anet/A2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Anet/A2plus/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Anet/A6/Configuration_adv.h

@@ -478,8 +478,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Anet/A8/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/AnyCubic/i3/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/ArmEd/Configuration_adv.h

@@ -483,8 +483,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/BIBO/TouchX/cyclops/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/BIBO/TouchX/default/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/BQ/Hephestos/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/BQ/Hephestos_2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/BQ/WITBOX/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Cartesio/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/CR-10/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/CR-10S/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/CR-10_5S/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/CR-10mini/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/CR-8/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/Ender-2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/Ender-3/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Creality/Ender-4/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Einstart-S/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Felix/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/FlashForge/CreatorPro/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/FolgerTech/i3-2020/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Formbot/Raptor/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Formbot/T_Rex_2+/Configuration_adv.h

@@ -483,8 +483,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Formbot/T_Rex_3/Configuration_adv.h

@@ -484,8 +484,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Geeetech/A10M/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Geeetech/A20M/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Geeetech/MeCreator2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Geeetech/Prusa i3 Pro C/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Geeetech/Prusa i3 Pro W/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Infitary/i3-M508/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/JGAurora/A5/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/MakerParts/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Malyan/M150/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Malyan/M200/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Micromake/C1/enhanced/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Mks/Robin/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Mks/Sbase/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/RapideLite/RL200/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/RigidBot/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/SCARA/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Sanguinololu/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/TheBorg/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/TinyBoy2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Tronxy/X3A/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Tronxy/X5S-2E/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/UltiMachine/Archim1/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/UltiMachine/Archim2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/VORONDesign/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Velleman/K8200/Configuration_adv.h

@@ -492,8 +492,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Velleman/K8400/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/WASP/PowerWASP/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/Wanhao/Duplicator 6/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/Anycubic/Kossel/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/FLSUN/kossel/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/Geeetech/Rostock 301/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/MKS/SBASE/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/Tevo Little Monster/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/generic/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/kossel_mini/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/delta/kossel_xl/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/gCreate/gMax1.5+/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/makibox/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/tvrrug/Round2/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false

config/examples/wt150/Configuration_adv.h

@@ -479,8 +479,8 @@
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}
 
-// Allow duplication mode with a basic dual-nozzle extruder
+// Add a Duplicate option for well-separated conjoined nozzles
-//#define DUAL_NOZZLE_DUPLICATION_MODE
+//#define MULTI_NOZZLE_DUPLICATION
 
 // By default pololu step drivers require an active high signal. However, some high power drivers require an active low signal as step.
 #define INVERT_X_STEP_PIN false