Hi All

I am a beginner in PLC and i would like to use my PLC to monitor and control pressure by using LOGO TD display, I have tried with Mathematic block, but it didnt work out properly.

If anybody can guide me through, i would be really thankful.

Best regards

ixo65

What exactly do you want to control?
Do you want to change a limit value?

We need more detailed Information.

Hi

thanks for the  reply "ixo65", i will explain my system briefly.

I am planing to build an automated Pulse switching circuit, here i need to monitor the pressure and pulse and instead of using a Function generator i would like to use my Siemens LOGO to produce this pulse (range for 50mHz ~ 2Hz), so once it completed certain time (for example 60 min) it should stop automatically the pulse and then switch of the pressure inlet(with a solenoid value).