Connecting a rotary encoder to PLC??

Good Afternoon,

I need help on connecting a rotary encoder to an Omron PLC CPM1A. The encoder im using is SUMTAK OPTCODER which has the ff terminals:

1 A RED
2 B GREEN
3 Z YELLOW
4 0V PINK
5 0V BLUE
6 0V ORANGE
7 5V WHITE
8 0V BLACK
9 SHLD GRAY


I connected phase-A, phase-B, phase-Z to input terminal 0.00, 0.01, 0.02 on the PLC respectively. I connected the encoder to a 5v supply. Then I enabled the high speed counter on the CPM1A PLC using cx programmer. PLC is on common negative configuration but its connected to a diff power supply since it's 24v. Used the PRV command to read the encoder values but the value is stuck at "0".

Anything wrong with my setup? Thanks

Hi,
This is a 24V input PLC and the on-voltage is 14,4VDC

BjarkeSS

Thanks a lot BSS, didnt notice that. since we dont have a 24v encoder. we might need to use an optocoupler. but aside from that anything else that you might recommend?

No i´ll think you get it right when the 24V is hoked up