Problem:
When using Trinamic drivers with the Marlin 3D printer firmware, you might occasionally experience errors like
Send: N4193 G1 X12.345 Y34.567 E122.15252 Recv: Recv: E driver error detected: 0x10136000 Recv: coil short circuit Recv: X Y Z E Recv: Enabled true true true true Recv: Set current 2000 2000 2000 1000 Recv: RMS current 1999 1999 1999 990 Recv: MAX current 2819 2819 2819 1396 Recv: Run current 31/31 31/31 31/31 19/31 Recv: Hold current 15/31 15/31 15/31 9/31 Recv: Global scaler 167/256 167/256 167/256 133/256 Recv: CS actual 31/31 31/31 22/31 19/31 Recv: PWM scale 196716 33095745 65576 33488924 Recv: vsense Recv: stealthChop true true true true Recv: msteps 128 128 128 128 Recv: interp true true true true Recv: tstep 171 678 max 1580 Recv: PWM thresh. 24 24 411 13 Recv: [mm/s] 102 102 3 41 Recv: OT prewarn false false false false Recv: triggered Recv: OTP false false false false Recv: off time 4 4 4 4 Recv: blank time 24 24 24 24 Recv: hysteresis Recv: -end 2 2 2 2 Recv: -start 1 1 1 1 Recv: Stallguard thrs 0 0 0 0 Recv: uStep count 62 32 227 497 Recv: DRVSTATUS X Y Z E Recv: sg_result 0 0 395 0 Recv: stallguard Recv: fsactive Recv: stst * * * Recv: olb Recv: ola Recv: s2gb * Recv: s2ga Recv: otpw Recv: ot Recv: Driver registers: Recv: X 0x00:1F:40:00 Recv: Y 0x00:1F:40:00 Recv: Z 0x80:16:41:8B Recv: E 0x10:13:60:00 Recv: Recv: Recv: echo:Driver error Recv: Error:Printer halted. kill() called! Changing monitoring state from "Printing" to "Error"
Solution:
If the error always occurs at the start of each print, be sure to check your stepper motor setup for actual shorts! Measure the inducitivity using an LCR meter to be sure, it should be around the rated value for your motor! See this post for information about typical stepper motor inductivity.
If the error occurs occasionally, it is recommended in the datasheet that you use more conservative short detection settings.
You need to make the change this in Marlin/src/module/stepper/trinamic.cpp.
Go to the section for the driver type you are using. In my example, this would be
#if HAS_DRIVER(TMC5160)
// ...
void tmc_init(/* ... */) {
// NOTE: tmc_init() is the function we need to insert code in!
}
#endifNow insert, just before the TERN(HYBRID_THRESHOLD, /* ... */) line (if such a line does not exist, insert at the end of the function:
// Set more conservative short detection settings st.shortfilter(3); // 3us SHORT filter st.s2vs_level(15); // Lowest sensitivity short to supply voltage protection st.s2g_level(15); // Lowest sensitivity short to ground protection st.shortdelay(1); // 1.5us instead of 0.75us short delay
These are the most conservative settings possible using this setup.
Now retry your print.
In case this still doesn’t help, you can disable short protection entirely. Note that short protection exists to prevent damage to your stepper motor, your mainboard and your cabling, so you should only disable it if there is no other choice!
In order to disable short protection entirely, insert this code block instead of the conservative setting code block from above:
// Disable short protection entirely st.diss2g(true); st.diss2vs(true);
Tested with Marlin version 2.0.9.1