The MKS V1.4 motherboard, optocoupler isolation board, and Panasonic A6 servo controller are connected, but the motor cannot be driven. Please help.

[guo feng]

Hello everyone, I'm from China. I'm currently encountering the problem described in the title: I can't drive the motor. Could you please help me identify the wiring issue and how to configure my A6 servo to drive the motor? The image below shows the specific wiring method, including the optical transport board and motherboard. Thank you!

Smoothieware固件，主板MKS V1.4

[SM]

This 4-ch opto-board is likely not compatible with the low-power digital outputs of the MKS board.

The optocouplers already built into the servo drive probably require a slightly higher signal level (>4V) to be driven directly from the MKS board.

I always use a differential signal driver, such as the AM26LV31, to drive the Pulse/Sign-lines (<500kHz) and for the Enable-lines i'm using a 74LS07 or transistors.