I am using an “ProXR Industrial Relay Controller Board 32-Channel SPDT + UXP Expansion Port” with a quantity of 3 “XR Expansion SPDT 32-Relay Controllers”. I am also using the RS-485 Serial Communications Module.
I have an issue where the last expansion board in my chain isn’t responding to any commands. All others are working fine. I am also using the 6″ XR Expansion Cable that is provided on every unit.
Any ideas on what could be the issue here?