SIMATIC WinCC Open Architecture Forum

Hi everyone,

I need to interact with OPC data—both reading from and writing to OPC UA servers. Could you explain in detail how to configure and implement this

I'm currently working on a project in WinCC OA version 3.20, and I need help with few things: 1. I want to write a control logic e.g., if a value exceeds a trigger an alarm or set another tag).

I need to bind a data point (tag)to a text field or slider in a panel. What's the recommended way to do this in version 3.20

Hi everyone,

I need to interact with OPC data—both reading from and writing to OPC UA servers. Could you explain in detail how to configure and implement this

I'm currently working on a project in WinCC OA version 3.20, and I need help with few things: 1. I want to write a control logic e.g., if a value exceeds a trigger an alarm or set another tag).

I need to bind a data point (tag)to a text field or slider in a panel. What's the recommended way to do this in version 3.20

Information how to use the OPC UA client in WinCC OA you can find in the WinCC OA Documentation:
https://www.winccoa.com/documentation/W ... asics.html

For triggering alerts in WinCC OA you can use the _alert_hdl config. How to configure an _alert_hdl config is described in the WinCC OA Documentation:
https://www.winccoa.com/documentation/W ... RA-17.html

Interaction between data and the user interface is possible with objects and scripts in CONTROL (WinCC OA programming language).
https://www.winccoa.com/documentation/W ... _GEDI.html

We recommend to attend a basic training when starting to work with WinCC OA.
Information for the training modules you can find in the WinCC OA World:
https://www.winccoa.com/support/training.html

Best Regards
Leopold Knipp
Senior Support Specialist