RLY8 - GPIO Board mk2

if you need more i/o than is available on your controller you can expand it with this rly8io expansion board eight additional relay outputs and eight opto coupled inputs this card is connected through the modbus rtu interface of the controller technical specifications 2x rs485 interface rs485, modbus compatible (cable length up to 20m) 1x rs485 in for connection to the controller 1x rs485 out to daisy chain to additional rs485 devices 1x cpu5b connection (connect to ext 2 on cpu5b) 8x relay outputs (up to 24v) 8x optocoupler isolated inputs (works from 5 24v input voltage, 1 ma) power supply 24v dc dimensions 107x160mm others firmware upgradable through the usb connection board overview