I am using Siemens S7-300 ,CPU314C-2 PN/DP PLC in out lab to control one multivariable process. We have a level sensors having sensor output voltage range as 0-5 V which will be my AI to PLC.Also in order to control level we have manipulated variable as pump voltage(0-10V) which will be AO from PLC.
I have gone through the user manual for wiring diagrams of Internal AI/AO/DI module of this PLC(DI8x 24DC-AI5/AO2 x12 bit) in order to connect level sensor as AI01 and AO01 as pump voltage.I think i made the wiring connection as suggested in manual but stil neither AI nor AO is working. Following are my questions:
1. Does internal AI/AO module requires supply voltage?
2. If anyone has used above mentioned AI/AOmodule for voltage sensors (not current measurment) ,then can you please share wiring diagram for such module.
I have total 4 level sensors and 2 pump to control. I plan to use following configuration: