Modbus 485 connection to ABB PST soft starter w/MRP21-FBP field bus plug


Thread Starter

Gilbert Avalos

This is fairly straightforward (I would think) The issue I have is that PST field bus plug must have a config file written to it before it works. I have an ABB document 1SFC132046M0201, page 12 specifies pretty clearly how to set it up using a standard Modbus multi register write command. However, they don't specify destination register(s).
Has anyone out there done this?