Function Code 8 library in C


Thread Starter

Engin Esiyok

Trying to communicate ABB AC450 master RTU with ABB AC31 slave RTU. Master sends function code 8 but AC31 does not respond. They have recommended to use a KD485 MODBUS RTU slave programmable to function code 8 in C. Anybody has a function code library in C? Or any other recommendation?