I Have recently got a new analog input signal board and a pressure transducer to measure air pressure.

I created a network and added in code to covert the analog signal to psi. Shown in photo. but for some reason when I run the plc it activates all the logic at once and causes the plc to turn everything on.

I then went back to basics and created a new program with only the one network converting the analog to psi. It all worked fine so I added in another network and wrote a simple boolean program with one input and output. with the input being a memory bit controlled with a button on a hmi screen and the output being a simple indicator on the hmi.

Again when i run the plc it automatically turned on the input without me touching the button. it does it in both simulation and on the real plc.

Does anyone know what I am doing wrong?

Yes this sorted it Thankyou.

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