What is you want to received one when the PLC is sending you zero and vice versa.
It is quite simple in 800xA… actually. But can be easily forgotten.
This article is dedicated to forgetfully engineers like myself, and to serve was a reminders for the rest of us.
Start your Engineering Workplace (Composer). Select to Control Structure and go to your tag in question.
Next click on “Signal Configuration” aspect and and uncheck the “User Default signal values” (if it is checked)
Check the “Inverted” and click on Apply button.
Next, deploy the changes.