The rectangle appears in all the WR21 (the costumer and my WR21).
The problem is in the HMI because if you access to WebVisu in the Engineering PC, the rectangle doesn't appear.
Thanks.
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I made a request to SmartHMI, to add a new WebIQ configuration, that you can select if the system or WebIQ keypad is displayed on Android.
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See also topics already discussed this question with the same result:
How to set the system time out of the PLC program?
Change Ip Adress and Date/Time of the Core through the PLC
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