Hello,

I need to control a refrigation system using a setpoint and an analog input.

Analog input is working correctly, I can see the value change online.

I am able to change the value of a counter with "ESC+UP key" and "ESC+DOWN key".

I would like to use this counter as a setpoint.

When temperature is higher than setpoint plus 5, output 1 must be activate.

If temperature goes lower than setpoint minus a 5, output 1 must me deactivate.

It is hysteresis, doesn't need to be a PI controller, but I am not sure which instruction to use.

I am not able to connect the counter value to the Analog threshold trigger instruction.

Can you help me please?

Best regards,

HugoD

Hello ixo65,

That is amazing!

Thank you very much, I really appreciate.

Have a good day!

Best regards,

HugoD

 how to open this zip fil? 

ixo65

Here's a possible solution.