I'm currently experiencing an issue with an I/O field in WinCC Unified. I need to dynamically switch the Mode property between "Input/Output" and "Output", depending on a specific set of runtime conditions.

The idea is that when a certain condition evaluates to True, the I/O field should be in Input/Output mode, allowing user input. When the condition is False, the field should switch to Output mode, preventing any user changes.

I’ve attempted to implement this behavior using scripting, but even the most basic conditional logic doesn't seem to take effect. So far, the only working approach has been using the "Operator Control Allowed" setting. However, when that option is disabled, the field becomes semi-transparent, which negatively affects the user interface.

Do you know of a reliable way to dynamically change the I/O field mode at runtime without impacting the visual appearance?

Thanks in advance for your assistance.

I would like to use a script instead of a tag to control the Mode property of an I/O field. However, no matter what I try, the script doesn't work—likely because the values for Output and Input/Output are not clearly defined within the script.

My goal is to implement a condition such as:
If LocalRecipe = True OR MaterialID = 41 OR MaterialID = 42 → then Mode = Input/Output
Otherwise, the Mode should be set to Output.

I would appreciate any guidance on how to correctly implement this using a script and define the correct values for the Mode property.

I would like to attach an image to help illustrate the issue more clearly. Would that be possible?"

Would this be possible to do with an expression? The logic seems to look fairly expression-like, and it would allow you to just select the mode you want.

if you did absolutely have you use a script, are you referring to the correct property?

The mode property is called IOFieldType and needs to be set to either 0 or 2.

if (x){
	item.IOFieldType = 0; //Output Only
}
else {
	item.IOFieldType = 2; // Input/Output
}