3DPrinting/MarlinFirmware
1
0
Fork 0
mirror of https://github.com/MarlinFirmware/Marlin.git synced 2024-11-29 23:07:42 +00:00
Code Issues Releases Wiki Activity

Added a caution about EEPROM being disabled by default, and a little more explanation. Also tried to reformat the list of commands to display better.

RetireeJay46 2015-12-24 09:42:37 -05:00
parent a24148d5e9
commit e3d26393e2
1 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
EEPROM.md

@ -1,4 +1,7 @@
Most 3D printer electronics include a little bit of storage (512K, 3K, or more) called EEPROM (Electrically Erasable Programmable Read-Only Memory - whew!) that persists when the power is off. Marlin uses the EEPROM to store the printer settings and loads them up the next time the machine powers up.
Most 3D printer electronics include a little bit of storage (512K, 3K, or more) called EEPROM (Electrically Erasable Programmable Read-Only Memory - whew!) that persists when the power is off. Marlin uses the EEPROM to store the printer settings and loads them up the next time the machine powers up. Changing the source code and re-flashing the firmware does not change the contents of EEPROM (unless there is a new EEPROM version identifier indicating that the overall organization of the EEPROM has changed).
==== EEPROM can be enabled or disabled =====
Note that there is a line in Configuration.h which controls whether or not EEPROM is enabled. At the moment, by default, the developers Disable EEPROM. This is to avoid the "unintended consequence" of developers making changes to the values in Source Code and then having the printer boot up using the EEPROM values. But note that if you have EEPROM enabled, you can load it with "factory defaults" (coming from the Source Code) using M502.
==== EEPROM GCodes ====
* [[M500]] Store current settings in EEPROM for the next startup or M501.
@ -9,14 +12,14 @@ Most 3D printer electronics include a little bit of storage (512K, 3K, or more)
==== Settings Stored in EEPROM ====
When you do an <code>M503</code> command it prints a report like this, which will differ depending on your [[Marlin Configuration|configured options]]:
'''>>>M503 S0'''
M92 X80.00 Y80.00 Z4000.00 E1258.14
M203 X500.00 Y500.00 Z2.25 E45.00
M201 X9000 Y9000 Z100 E300
M204 P1500.00 R1500.00 T3000.00
M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
M206 X0.00 Y0.00 Z0.00
M145 M0 H180 B70 F0
M145 M1 H240 B110 F0
M301 P20.83 I1.04 D104.71 C1.00
M92 X80.00 Y80.00 Z4000.00 E1258.14
M203 X500.00 Y500.00 Z2.25 E45.00
M201 X9000 Y9000 Z100 E300
M204 P1500.00 R1500.00 T3000.00
M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
M206 X0.00 Y0.00 Z0.00
M145 M0 H180 B70 F0
M145 M1 H240 B110 F0
M301 P20.83 I1.04 D104.71 C1.00
If you haven't changed these settings, then they correspond to the contents of the EEPROM.