I have some Siemens S7 PLCs connecting to a Wonderware Intouch 7 installation. I can pull of a VAT in Step 7 on a 2nd computer and enter in some values and they will instantly be reflected on the Intouch screen.
Other values won't change on the Intouch, even though I set the VAT to constantly load the values. I opened up the WWCLIENT and tried to view the same tag and it shows that the value wasn't updated.
If I change the value in WWClient, I can see it reflected on the Step-7 computer, and in the InTouch program.
Any ideas of what might be causing this? Could it be a PLC problem?
Pardon the language that I used in this post. I'm fairly new to this stuff, so my lingo might not be correct.
Other values won't change on the Intouch, even though I set the VAT to constantly load the values. I opened up the WWCLIENT and tried to view the same tag and it shows that the value wasn't updated.
If I change the value in WWClient, I can see it reflected on the Step-7 computer, and in the InTouch program.
Any ideas of what might be causing this? Could it be a PLC problem?
Pardon the language that I used in this post. I'm fairly new to this stuff, so my lingo might not be correct.