normal Marcom S7 Service memory consumption

  • Fatem
  • Fatem's Avatar Topic Author
01 Nov 2018 16:34 #1483 by Fatem
Hi Folks,

Yesterday we encountered a problem with the Marcom service in our production environment.

Indeed, although the Marcom service was able to retrieve the data tags from the Siemens S7-300, the OpenOPC gateway cli wasn’t able to retrieve those data.

We have noticed that the Marcom service memory consumption was around 200 Mo instead of less of 30Mo when everything works fine. We didn’t find any relevant information on the service Marcom log exept the following one:
Exception 31/10/2018 15:09:13:846 Cannot stop S7.NetService service on computer '.'.

In the other side, we have noticed the following errors on the Windows event log (Sorry it's in french):

31/10/2018 14:38:15
Nom de l’application défaillante S7Net.exe, version : 1.34.6778.32719, horodatage : 0x5b55fe0a
Nom du module défaillant : WtOPCSvr.DLL, version :, horodatage : 0x3ca30c0d
Code d’exception : 0xc0000005
Décalage d’erreur : 0x00007ec8
ID du processus défaillant : 0x49880
Heure de début de l’application défaillante : 0x01d463955d3b672e
Chemin d’accès de l’application défaillante : C:\Program Files (x86)\Marcom OPC Server S7.Net\S7Net.exe
Chemin d’accès du module défaillant: C:\Program Files (x86)\Marcom OPC Server S7.Net\WtOPCSvr.DLL
ID de rapport : 374226bb-dd12-11e8-80c7-00865675144f
Nom complet du package défaillant :
ID de l’application relative au package défaillant :

31/10/2018 14:37:32
Application : S7Net.exe
Version du Framework : v4.0.30319
Description : le processus a été arrêté en raison d'une exception non gérée.
Informations sur l'exception : code d'exception c0000005, adresse d'exception 10007EC8

Did you already face some kind of behavior ?

Any clues are welcome.

Many thanks in advance for your support.
02 Nov 2018 12:35 #1484 by marcom
Replied by marcom on topic Marcom S7 Service memory consumption
Dear mr. Fatem,

we have analyzed error message but we cannot find any issue on our side.
Only strange configuration I can find is computer name on very first error

Exception 31/10/2018 15:09:13:846 Cannot stop S7.NetService service on computer '.'.

DOT is a reserved OPC separator and it could be cause of error on OPC dll.
Could you please try to change computer name?

Best regards

Marcom S.r.l.
via della Metallurgia, 11
37139 - Verona (VR)
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