From e4ee607fc8cc925827d0e3ab7447251c720f73a1 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Tue, 18 Sep 2018 21:16:07 -0500
Subject: [PATCH] Fix Dual X FRS in M600
Co-Authored-By: InsanityAutomation <insanityautomation@users.noreply.github.com>
---
Marlin/src/gcode/feature/pause/M600.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Marlin/src/gcode/feature/pause/M600.cpp b/Marlin/src/gcode/feature/pause/M600.cpp
index 5bb54de65c..c471e03c6d 100644
--- a/Marlin/src/gcode/feature/pause/M600.cpp
+++ b/Marlin/src/gcode/feature/pause/M600.cpp
@@ -60,7 +60,7 @@ void GcodeSuite::M600() {
int8_t DXC_ext = target_extruder;
if (!parser.seen('T')) { // If no tool index is specified, M600 was (probably) sent in response to filament runout.
// In this case, for duplicating modes set DXC_ext to the extruder that ran out.
- #if ENABLED(FILAMENT_RUNOUT_SENSOR)
+ #if ENABLED(FILAMENT_RUNOUT_SENSOR) && NUM_RUNOUT_SENSORS > 1
if (dxc_is_duplicating())
DXC_ext = (READ(FIL_RUNOUT2_PIN) == FIL_RUNOUT_INVERTING) ? 1 : 0;
#else