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P116 controller and siemens plc & hmi

Sir E-pack has been installed but in the panel siemnes PLC and HMI also installed one k type thermocouple is there for temperature and referance going to PLC but same thermocuple wire go to controller116 then PLC HMI NOT showing temperature means parallel connection is not working.
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  • Yes Sir,
    a thermocouple should never be connected in parallel to more then one input.
    Remember that you just have a few μV or mV as signal. So the impedance of the measure input does have a lot to do with the displayed value. For that reason Eurotherm thermocouple inputs do have a very high impedance.
    A solution could be a double thermocouple, or a measure transducer, or you can use the digital communication of the P116.
    Rudi
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