[BUG] Double z mode with asymmetric Z-axis step

[amxsa]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

[BUG] Double z mode with asymmetric Z-axis step

MKS GEN_L V2.1 ，Z2_SERIAL_TX_PIN and Z2_SERIAL_RX_PIN not define ？

#define X_DRIVER_TYPE  TMC2209
#define Y_DRIVER_TYPE  TMC2209
#define Z_DRIVER_TYPE  TMC2209
#define Z2_DRIVER_TYPE TMC2209
#define E0_DRIVER_TYPE TMC2209

Bug Timeline

No response

Expected behavior

Double z mode, Z axis step symmetry

Actual behavior

Double z mode with asymmetric Z-axis step

Steps to Reproduce

No response

Version of Marlin Firmware

marlin 2.1.1

Printer model

MKS GEN_L V2.1

Electronics

No response

Add-ons

No response

Bed Leveling

No response

Your Slicer

No response

Host Software

No response

Don't forget to include

• [X] A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

Configuration.zip

[amxsa]

In fact, the Z-axis is in uart mode, but the program prompts a TMC connection error

[ellensp]

This Issue Queue is for Marlin bug reports and development-related issues, and we prefer not to handle user-support questions here. (As noted on this page.) For best results getting help with configuration and troubleshooting, please use the following resources:

• MarlinFW.org Marlin Documentation
• RepRap.org Marlin Forum
• Facebook Group "Marlin Firmware"
• Facebook Group "Marlin Firmware for 3D Printers"
• Marlin Configuration on YouTube
• 3D Printing Discord server. Join link: https://discord.gg/3dprinters
• Marlin specific Discord server. Join link: https://discord.gg/n5NJ59y

After seeking help from the community, if the consensus points to a bug in Marlin, then you should post a bug report.

[ellensp]

The uarts pins should auto allocated from the unused E, this is a bug... The TMC error is probably a bad stepper driver.

[github-actions[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.