Android Connection Lost

[Dag-Are.Trydal@nov.com]

I'm using the SIMATIC WinCC OA UI app on Android.

When using a wireless network to connect the app exits after a short time (less than 5 minutes).
I have the Android tablet connected to to a computer so I can se the log (using "abd"), and this is the info theat it prints out.

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I/WinCC_OA(28833): WCCOAui      (209), 2017.08.30 10:36:49.966, SYS,  INFO,      181, Closing connection to (SYS: 1 Data -num 0 CONN: 1)
I/WinCC_OA(28833): WCCOAui      (209), 2017.08.30 10:36:49.967, SYS,  INFO,      181, Closing connection to (SYS: 1 Event -num 0 CONN: 1)
, MAN: (SYS: 1 Data -num 0 CONN: 1), Connection closed6:49.969, SYS,  INFO,       39, Connection lost
, MAN: (SYS: 1 Event -num 0 CONN: 1), Connection closed:49.972, SYS,  INFO,       39, Connection lost
I/WinCC_OA(28833): WCCOAui      (209), 2017.08.30 10:36:50.356, SYS,  INFO,        2, Manager Stop

Do anyone have a clue on what it can be that causes the connection to be closed?
This is not a problem when I use ethernet insted of a WiFi connection.

[mkoller]

What does the server log show from Data/Event Manager ?
In general, the Android UI closes the connection when you set the device to standby, but it will automatically reconnect when activated again.
This however would never STOP the UI on the Android device, which is different in your case.

[Dag-Are.Trydal@nov.com]

This is from the server:

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WCCOAtoolLogViewer(1), 2017.08.30 13:24:05.911, PARAM,WARNING,   224, Security issue: Username or Password entry found in config file!
WCCOAs7      (1), 2017.08.30 13:24:22.635, PARAM,INFO,       30/s7, Inactive connection 0 has been activated. Start alive check for MW_HT
WCCOAs7      (1), 2017.08.30 13:24:22.666, SYS,  INFO,        0, , S7Connection, processAliveCallback, Connection reestablished to MW_HT(3)
WCCOAs7      (1), 2017.08.30 13:24:22.666, SYS,  INFO,        0, , S7Connection, generalQuery, Starting general query for connection:  MW_HT
WCCILdata    (0), 2017.08.30 13:29:20.864, SYS,  INFO,       39, Connection lost, MAN: (SYS: 1 Ui -num 209 CONN: 1), Connection closed
WCCILevent   (0), 2017.08.30 13:29:20.865, SYS,  INFO,       39, Connection lost, MAN: (SYS: 1 Ui -num 209 CONN: 1), Connection closed
WCCOAs7      (1), 2017.08.30 13:29:20.876, PARAM,INFO,       28/s7, Active connection 0 has been deactivated. Switch active connection for MW_HT
WCCOAs7      (1), 2017.08.30 13:29:20.877, SYS,  SEVERE,      7/s7, No active connection for MW_HT

(and from the Android device:

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[code]
I/WinCC_OA( 2812): WCCOAui      (209), 2017.08.30 13:29:24.901, SYS,  INFO,      181, Closing connection to (SYS: 1 Data -num 0 CONN: 1)
I/WinCC_OA( 2812): WCCOAui      (209), 2017.08.30 13:29:24.902, SYS,  INFO,      181, Closing connection to (SYS: 1 Event -num 0 CONN: 1)
, MAN: (SYS: 1 Data -num 0 CONN: 1), Connection closed9:24.904, SYS,  INFO,       39, Connection lost
, MAN: (SYS: 1 Event -num 0 CONN: 1), Connection closed:24.907, SYS,  INFO,       39, Connection lost
I/WinCC_OA( 2812): WCCOAui      (209), 2017.08.30 13:29:25.297, SYS,  INFO,        2, Manager Stop

[/code]

[Gertjan van Schijndel]

Could you post more of your log files? Apparently there is not enough information to determine a cause.
From the server log file we do not need the lines of drivers or the log viewer.