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Troubleshooting Issue with Writing Values to Items in FTView ME Station 10.00 on Windows 10 PC

Question:

Greetings, everyone! I am currently using a Windows 10 PC with a FTView ME Station 10.00 installed. My .mer file has a version of 6.00 and has been functioning smoothly for quite some time. However, after a recent disconnection and reconnection, I am encountering several faults, with the main issue being related to writing values to specific items. The error messages include "Problem writing value '0' to item '.....ChangeScreenAltTab'" and "Problem writing value '1' to item '.....ChangeScreenAltTab'". Additionally, there are multiple errors indicating that certain items are no longer available. Upon further investigation, I have confirmed that the communication between the HMI (PC) and PLC is functioning correctly, and the HMI program is correctly configured with the appropriate IP address. Despite this, the issue persists. If anyone has any insights or suggestions on how to troubleshoot this issue, it would be greatly appreciated. Thank you in advance (TIA) for your assistance.

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It seems that one or more tags listed in the project's Global Connections are no longer present in the PLC system.

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