IEC Driver issues

akim · Post by **akim** » Thu Jan 07, 2021 9:45 am

Hi,

Version WinCC OA 3.17 P009

Why driver error doesn't affect data point element's diagnostic attributes?
As far as I remember, this behavior is observed with other drivers as well.
https://prnt.sc/wi3gjh

adaneau · Post by **adaneau** » Fri Jan 08, 2021 2:29 pm

Hey,

I see in the panel that you dont show what you choose in the combo box for "Set invalid bit". What did you use there?

Best
Alexandre

akim · Post by **akim** » Sat Jan 09, 2021 4:48 am

adaneau wrote: ↑Fri Jan 08, 2021 2:29 pm I see in the panel that you dont show what you choose in the combo box for "Set invalid bit". What did you use there?

Hi,

Thank you, Alexandre.
You are right, I leaved Set invalid bit = Inactive. I have fixed it. Thanks

akim · Post by **akim** » Sat Jan 09, 2021 4:51 am

Also I found why Invalid bit doesn't trigger when driver is disabled.

From help:
"Since the deactivation of a connection is a requested user action, in this case the invalid bits on connection loss are not set on the related input or input/output addresses. This means the invalid bits are only set if an active connection is either lost or cannot be established."

Bugs / Problems