The SB655 C uses a specific button logic to prevent accidental changes:

: Support for TTL , Miconet , and Modbus protocols (/S models include RS485 for network integration).

You are replacing a mechanical switch with a smart computer. Treat it gently—no dropping on concrete.

Moving past the jargon—your real-world guide to wiring, parameters, and troubleshooting the SB655C controller.