Increse speeds Decrese speeds and forward and reverse of vfd by plc
if i give 1151 data through modbus master in PM554 vfd start
if i give 1150 data then vfd stop
likewise anyone can tell control word address for forward and reverse , increase speed and decrease speed
Voted best answer
I don't know which drive you are using, but some hint - use windows calculator in programmer mode.
You can see:
1151 dec = 10001111111
1150 dec = 10001111110
Seems the last bit is changing, so it should be start/stop command.
Just look which bits control forward/reverse, inc/decr etc
But better idea is to shift/mask the bits in the control word in order to have a clear logic