wincc flexible: display tag while disconected

[apetkov5]

Hi all,

I am using WinCC flexible 2008 for controlling some application via modbus tcp.

While plc is connected to scada computer (via ip) everything is ok, and in I/O filed I can read tag (example 124.32).

But when connection is down I get "#####" in I/O field.

I nead to set up that last state is shown in I/O field (example 124.32), until ip network is up again.

Any sugestions?

 

[Maitomies]

Hi,

I don't know about WinCC Flexibles internal options about this but some script might help here. You could move the last good value to an internal tag when it changes in PLC and display the internal tag.

But you might want to have also an indication that the tag values cannot be trusted?

Why is the connection down?

M

 

[Homer_BL]

Maybe this will help...

https://www.automation.siemens.com/...spx?PageIndex=1&PostID=223358&Language=en#top