How to make sure USB flash disk in connect.
Update Time:2016-11-07

There is a specialaddress for USB flash disk, it is HSW669.

HSW669=0, it means there is no USB flash diskconnected to HMI.

HSW669=1, it means there is a USB flash diskconnected to HMI but no data is writing.

HSW669=2, it means there is a USB flash diskconnected to HMI, and data is writing.

HSW669=3, it means there is a USB flash diskconnected to HMI, but it can't be used.

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