Hi everyone
i have a vfd with db9 (RS232)as it's manual said ,so in order to make a communication with this VFD and (1200plc) i need CM1241(RS232) module or a signal board(RS232)
but is't possible to use CM1241 (RS485) instead of CM1241(RS232)
technically what's the difference between CM an SB in this case
kind regards