10/29/2024 11:15 AM | |
Joined: 1/21/2013 Last visit: 2/9/2025 Posts: 3524 Rating:
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Hi Thenameinforum, I tried to reproduce the behavior and succeeded when the PLC wrote the same value in every cycle. In this case, if I select a different value on the symbolic IO field, the field shows that value, but (of course) the PLC has the value it wrote. This seems to be caused by tag caching and bad timing. For me it worked when I used scripting instead of tag for dynamization.
However, in my opinion it might be a better way to rethink the PLC program. Writing tag values to PLC and HMI at the same time will probably cause some problems. If you really need this feature, you should report the behavior to Siemens by creating a support request. Kind reqgards |
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