Spectral Micro: watchdog error while I configure it over UART

[PCrnjak]

Which product?

Spectral Micro driver

Your question

Asked often on Discord; posted here with the answer so it can be found.

I am setting up a Spectral Micro: gains, limits, saving. The motor is not moving, yet after a while the driver goes into a watchdog error, both from my CAN host and in a UART terminal.

What have you tried?

Spectral Micro firmware 107.

[PCrnjak]

This is known issue KI-11. Only motion frames and answered status requests reset the watchdog. Setting frames (gains, limits, Idle, Clear, Save) and UART commands do not, so a host that only configures the driver, or a terminal session with a saved watchdog, ends in a watchdog error.

• While the watchdog runs, send a status request such as Send_Respond_Encoder_data within every watchdog period.
• Before you work over UART alone, set the watchdog to 0 over CAN and save.

Details: The watchdog and the known issues of the Spectral Micro manual.