Answer Posted / senthilkumar saudi aramco
AI- Analog input (that means 24volt dc with 4-20madcdriving
the loop)
AO- Analog Output (that means only 4-20 madc driving the
loop)
D/I - Digital input (5volt/15volt/24volt/110volt supply
given from plc to the field switches
(pressure,level,limit,flow)to close the circuit or breake
the circuit.
D/O - Digital Output (PLC giving output voltage mode
24volt/110 volt to the field either solenoid valve or
electrical driven equipments
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