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OPC Connections

Created by: Duccio at: 5/1/2016 7:50 PM (9 Replies)

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5/1/2016 7:50 PM	Rate (0)
Duccio Bronze Member Joined: 12/7/2011 Last visit: 3/20/2025 Posts: 386 Rating: (10)	Hi to all, I've to replace an old HMI with Cimplicity as scada and Siemens OPC Server for the comunication with the S7 400. The problem is that i'm not able to configure the station configurator, what i did: If i start the configuration from Step7 trought the command PLC, configure on the PC Station, i get this such if the opc is still active. I try also to stop the opc server before, but nothing. If i try to import the XDB file from the Station Configuration it self, i get a red cross error for the XDB it self. I've try to reinstall Simatic Net but nothing. Someone have any idea? Thanks to all in advance. Regards Duccio. Attachment 1.pdf (356 Downloads)

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5/2/2016 7:41 AM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 3/16/2025 Posts: 2326 Rating: (309)	Hello What is the new SCADA type that you are using ? If its a Siemens SCADA ( e.g. WinCC ) then you do not need OPC server. You can just configure the S7 Protocol Suite ( For WInCC ) or S7 connection ( For WinCC Flexible ) Coming back to your issue, The Popup msg indicates that you should Stop the OPC Server before importing a new XDB file. It will not import a new XDB file if the OPC server is already running. For More details on using SIMATIC OPC Server : Data Communication between S7 Station and PC Station, using SIMATIC NET OPC Server Hope this helps Cheers Navnag
	There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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5/2/2016 8:52 AM	Rate (0)
Duccio Bronze Member Joined: 12/7/2011 Last visit: 3/20/2025 Posts: 386 Rating: (10)	Hi Navnag, Thanks for your reply. The scada is the Cimplicity (GE) and the protocol is OPC client, the comunication is throught the Simatic NET OPC Server. I've used many times the Simatic NET OPC server, but never faced with this kind of problem. The configuration in the station configurator is wrong, because has been used for a test. Now i have to configure the station configurator with the right configuration, but i'm not able to do that due to the attached error. Regards.
	Last edited by: Duccio at: 5/2/2016 9:50:54 AM
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5/2/2016 9:33 AM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 3/16/2025 Posts: 2326 Rating: (309)	Hello As I have mentioned in the previous post, you need to force Shutdown of the OPC Server. The following is an extract from this Manual : SIMATIC NET PC software Commissioning PC Stations - Manual and Quick Start 4.5.2.2 Forcing the OPC server to close down The OPC server for SIMATIC NET is started automatically by the operating system when a client ants to use it. The OPC server maintains reference counters to be able to recognize when the last egistered client is closed. The OPC Server then closes itself down. This is only possible when the lients set and reset the user counters of the OPC Server correctly. If a client closes down irregularly and the user counter is not reset, the OPC server will not close down although no more clients are active. The server continues to keep the communication connections open. In this case, it is a good idea to stop the OPC server manually. Follow the steps below if you want to close down or restart OPC server: 1. Open the "SIMATIC NET Configuration" folder in the navigation area. 2. Select "OPC settings" and click on the "Quit OPC server" property object. Hope this helps Cheers Navnag
	Last edited by: Navnag at: 5/2/2016 9:34:15 AM There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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5/2/2016 10:08 AM	Rate (0)
Duccio Bronze Member Joined: 12/7/2011 Last visit: 3/20/2025 Posts: 386 Rating: (10)	Hi Navnag, I've tried to stop the OPC server, but nothing change! But i discovered which is the problem, but i don't know why it happend and how i can fix it. The problem is that the service "SIMATIC NET Core Server S7" doesn't start. and when i try to start it, it will stay in a starting mode, but never will start completely. How can i fix it? Why this happend? Regards. Duccio.

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5/2/2016 10:14 AM	Rate (0)
Navnag Platinum Expert Joined: 11/21/2007 Last visit: 3/16/2025 Posts: 2326 Rating: (309)	Duccio Hi Navnag, I've tried to stop the OPC server, but nothing change! But i discovered which is the problem, but i don't know why it happend and how i can fix it. The problem is that the service "SIMATIC NET Core Server S7" doesn't start. and when i try to start it, it will stay in a starting mode, but never will start completely. How can i fix it? Why this happend? Regards. Duccio. Possibly you can Uninstall and then Re-install SIMATIC NET ( After a Reboot ) ..
	There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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5/2/2016 10:36 AM	Rate (0)
Murof Platinum Member Joined: 8/3/2009 Last visit: 3/27/2025 Posts: 15107 Rating: (1875)	Hello Duccio I think the OPC Server is stopped already as I cen see in the Screenshots. Can you post a screenshot of the Diagnostic screen in the Component configurator. If there is a interesting Information perhaps you can translate into englisch Bye Murof
	Last edited by: Murof at: 5/2/2016 10:38:10 AM If this Information really helps, you could use the Rate function
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5/2/2016 11:18 AM	Rate (0)
Duccio Bronze Member Joined: 12/7/2011 Last visit: 3/20/2025 Posts: 386 Rating: (10)	Hi Murof, right now im reinstalling again the Simatic NET. After the installation i'll try again, and i'll give the result asap. Thanks. Duccio.

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5/2/2016 4:34 PM
Murof Platinum Member Joined: 8/3/2009 Last visit: 3/27/2025 Posts: 15107 Rating: (1875)	Hello Duccio I wish you good luck. Hopefully it works afterwards Bye Murof
	If this Information really helps, you could use the Rate function
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5/2/2016 5:25 PM	Rate (0)
Duccio Bronze Member Joined: 12/7/2011 Last visit: 3/20/2025 Posts: 386 Rating: (10)	Hi to all getntlemen, More or less rhe problem has been solved. After some test, and reinstallation of the simatic net as well, the problem was still present. The services "S7 Core" does not start completely, the last test has been deinstall the Scada software and reinstall simatic net again. Now The OPC connection work properly. The point is, will work when i'll install againg the cimplicity? I hope so! At the end i'll update all of you. Thanks for the support. Regards. Duccio.

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This contribution was helpful to 1 thankful Users Murof

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