Connection state is Error

[kcks66]

Hi Mikhail,

I experienced data lost for few days until I restart PC. I looked in Comm log as below error:

2024-11-24 10:59:25 [MEMC][MEMC$][ACT] Command with ID 7440675068471910910 to the device 12 from ScadaServer
2024-11-24 20:35:59 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-24 20:36:02 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-24 20:56:05 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Command with ID 7440828957292515339 to the device 12 from ScadaServer
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Command with ID 7440828956503263967 to the device 12 from ScadaServer
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Command with ID 7440828956899164834 to the device 12 from ScadaServer
2024-11-25 06:32:50 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Command with ID 7440977582833520211 to the device 12 from ScadaServer
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Command with ID 7440977584460476159 to the device 12 from ScadaServer
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Command with ID 7440977582915463281 to the device 12 from ScadaServer
2024-11-25 06:33:51 [MEMC][MEMC$][ACT] Command with ID 7440977587201143211 to the device 12 from ScadaServer
2024-11-25 11:26:44 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-25 11:51:35 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-25 11:51:35 [MEMC][MEMC$][ACT] Command with ID 7441059596742334896 to the device 12 from ScadaServer
2024-11-25 23:27:31 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-25 23:28:01 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-25 23:28:01 [MEMC][MEMC$][ACT] Command with ID 7441239065091734223 to the device 12 from ScadaServer
2024-11-25 23:29:31 [MEMC][MEMC$][ACT] Command with ID 7441239451465877684 to the device 12 from ScadaServer
2024-11-26 08:53:39 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Logged In
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Command with ID 7441384853279994108 to the device 12 from ScadaServer
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Command with ID 7441384855086303301 to the device 12 from ScadaServer
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Command with ID 7441384853796188647 to the device 12 from ScadaServer
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Command with ID 7441384854754754322 to the device 12 from ScadaServer
2024-11-26 08:54:52 [MEMC][MEMC$][ACT] Stop communication lines
2024-11-26 08:54:52 [MEMC][MEMC$][ACT] Data source ScadaServer: Connection state is Error
2024-11-26 08:54:52 [MEMC][MEMC$][ERR] Data source ScadaServer: Error transferring current data:
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..
2024-11-26 08:54:52 [MEMC][MEMC$][ACT] All communication lines are stopped
2024-11-26 08:54:53 [MEMC][MEMC$][ACT] Logic processing is stopped
2024-11-26 08:54:53 [MEMC][MEMC$][ACT] Communicator is stopped

All worked just fine after I restarted PC.
Pls advice for what I should do to avoid errors in the future.

Thank you.

[kcks66]

I can see from Server log Communicator kept log-in and disconnected through out these few days:

2024-11-23 13:40:06 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-23 13:40:36 [MEMC][MEMC$][ACT] Delete outdated data from the Min archive older than 26/11/2014
2024-11-23 13:40:36 [MEMC][MEMC$][ACT] Delete outdated data from the Hour archive older than 26/11/2014
2024-11-23 13:43:54 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-23 13:45:01 [MEMC][MEMC$][ACT] Session with ID 4066578528122088325 created
2024-11-23 13:45:01 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-23 13:45:01 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-23 15:36:47 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 02:13:27 [MEMC][MEMC$][ACT] Session with ID 87564178681405224 created
2024-11-24 02:13:27 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 02:13:27 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 03:15:47 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 03:16:57 [MEMC][MEMC$][ACT] Session with ID -3227744418381615762 created
2024-11-24 03:16:57 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 03:16:57 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 03:19:52 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 03:21:51 [MEMC][MEMC$][ACT] Session with ID 8234002177814312848 created
2024-11-24 03:21:51 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 03:21:51 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 03:31:28 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 04:41:27 [MEMC][MEMC$][ACT] Session with ID 2911557974464289601 created
2024-11-24 04:41:27 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 04:41:28 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 10:40:00 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 10:59:25 [MEMC][MEMC$][ACT] Session with ID -5129900506855778040 created
2024-11-24 10:59:25 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 10:59:25 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 20:35:59 [MEMC][MEMC$][ACT] Delete outdated data from the Min archive older than 27/11/2014
2024-11-24 20:35:59 [MEMC][MEMC$][ACT] Delete outdated data from the Hour archive older than 27/11/2014
2024-11-24 20:35:59 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 20:36:02 [MEMC][MEMC$][ACT] Session with ID 7426910769959558500 created
2024-11-24 20:36:02 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 20:36:02 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-24 20:56:05 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Session with ID -4313990495017375050 created
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-24 20:56:35 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-25 06:32:50 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Session with ID 3605140054192168160 created
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-25 06:33:20 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-25 11:26:44 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-25 11:51:35 [MEMC][MEMC$][ACT] Session with ID 7484977101917070139 created
2024-11-25 11:51:35 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-25 11:51:35 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-25 22:40:00 [MEMC][MEMC$][ACT] Delete outdated data from the Min archive older than 28/11/2014
2024-11-25 22:40:00 [MEMC][MEMC$][ACT] Delete outdated data from the Hour archive older than 28/11/2014
2024-11-25 23:27:31 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-25 23:28:00 [MEMC][MEMC$][ACT] Session with ID 6198346968984755963 created
2024-11-25 23:28:00 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-25 23:28:01 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-26 08:53:39 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Session with ID -2381103704843185779 created
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-26 08:53:45 [MEMC][MEMC$][ACT] User ScadaComm is successfully authenticated
2024-11-26 08:53:46 [MEMC][MEMC$][ACT] Session with ID 7860151789968894349 created
2024-11-26 08:53:46 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-26 08:53:46 [MEMC][MEMC$][ACT] User ScadaWeb is successfully authenticated
2024-11-26 08:53:49 [MEMC][MEMC$][ACT] Client 127.0.0.1 disconnected
2024-11-26 08:53:50 [MEMC][MEMC$][ACT] Session with ID -1302092992591187326 created
2024-11-26 08:53:50 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-26 08:53:50 [MEMC][MEMC$][ACT] User ScadaWeb is successfully authenticated
2024-11-26 08:54:01 [MEMC][MEMC$][ACT] Session with ID 7512486213043968519 created
2024-11-26 08:54:01 [MEMC][MEMC$][ACT] Client 127.0.0.1 connected
2024-11-26 08:54:01 [MEMC][MEMC$][ACT] User ScadaWeb is successfully authenticated
2024-11-26 08:54:52 [MEMC][MEMC$][ACT] Stop listener
2024-11-26 08:54:52 [MEMC][MEMC$][ACT] Listener is stopped

[Mikhail]

Hi,

May be some other application affected network communications. Windows update also may be the cause.
I would prefer Linux for server software that needs to run 24/7.

[kcks66]

Hi Mikhail,

Looks like I shall check Rapid SCADA status whenever Windows update is taken place.

[Mikhail]

Hi,
You right, it will be useful.

[Author]

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