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搜尋常見問題
How can I know the IOSCANNING status of Modbus/TCP device writing ?
Issue
How can I know the IOSCANNING status of Modbus/TCP device writing ?

Product line Envirovment
Control Expert

Environment
Windows 10 64 bits ,Windows Server 2019 64 bits

Resolution
The freshness bit of IOSCANNING will be created when a READ command is included in Modbus DTM .
User may add a dummy read along with the writing command to generate a freshness bit to monitor the IOSCANNING status.

The Modbus device variable without READ command
image.png
The Modbus device variable with READ command
image.png

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