[ISS Support Case] System Platform 2020 R2 SP1 - Information Request
Last updated: October 17th, 2025Description
The client is seeking guidance on the following: Confirming Data Accuracy in PLC: How to verify data accuracy in a Programmable Logic Controller (PLC) if it is shut down or taken off the network. Best Practices for Data Accuracy: Recommendations for ensuring data accuracy between InTouch and the PLC. Preventing Writes to Disconnected PLC: Methods to prevent writing to the PLC if it is not connected or is off the network. Ensuring Data Consistency: Strategies to guarantee that any value modified in InTouch is also modified in the PLC. For example, if there is an InTouch button that is scripted to write to value in PLC, what is the best way to confirm consistency between InTouch & PLC. Additionally, would like to know of a system or status bit that can display a warning or message in WindowViewer if PLC is not connected (Heartbeat tag configuration). Client is using ABCIP communication driver.
- Author: Kevin Modlin
- Published: October 17th, 2025
Details:
| Product: Application Server |
| Version: 2020 R2 |
| Solution: [Solution is visible below when you're logged in and have a current subscription] |
| Date Created: | 05/27/2025 |
| Case: | 97781 |
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