What is an analog input - output , digital input - output .
Any example ???? How they r known its ai-ao or di - do
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Answer Posted / sudarshan sankapal
AI means field genarated signals comeing to Dcs or PLCs by the use of 24v DC suppy... ex sensors
AO means DCs or PLC genarated or field genarated signals going to control process parameters...ex control valves input 4 to 20ma
DI its logic signal 0 or 1 state came from electrical VFD drives or field...
DO its logic signal genarated in DCs to control feild process parameters..ex solenoid valves
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