on 07-19-2007 1:31 PM
Hi. I'm trying to set up Lighthammer UDSs to connect SAP xMII to Rockwell software - namely, RSLinx (PLC<->PC connection manager) and RSView (SCADA software). Both packages provide an OPC server which works flawlessly with any OPC client i've tested them against.
My issues were:
- RSLinx: Version 2.20.01 starts an OPC UDS correctly, and the UDS admin allows to select tags to export to xMII. Trying to access these tags from xMII with a dataserver fails with a "COM error". 2.50.0.4 works flawlesly though.
- RSView: I tried both the OPC connector and the dedicated RSView connector (with version 6.50.07) and neither works correctly, failing directly when trying to select tags in UDS admin.
I've battled endlessly with the available configuration options for each connector with little to no sucess. The logs provided by xMII provided little help, with these COM errors propagated between Java classes. Trying to conect xMII to other OPC servers works perfectly, which baffles me.
I'm running out of options here. The only sucess i had was updating RSLinx to a newer version, and this is not always an option when deploying xMII with new clients. Has anyone had similar issues with these programs? Thanks.
Lisandro,
Try starting the UDS as an executable....it's in the help documentation for the UDS, the help documentation can be access directly from the UDS Admin. Basically you have to run the following:
<Path>\LUDSAPP.exe [InstanceName]
This should work
-Sam
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I've just tried, and (for example, with the RSView OPC connection) i get the same result: The UDS starts up, but fails to retreive any tags and just hangs there (<a href="http://lisandro.homelinux.org/rsview_opc_uds.jpg">example image</a>).
Any idea of why running as a standalone executable instead of a service should do a difference, or is just one of those "just because" things?
I am not sure if you've already gone through these posts -
https://forums.sdn.sap.com/click.jspa?searchID=3978137&messageID=3109678
https://forums.sdn.sap.com/click.jspa?searchID=3978137&messageID=3156387
These are specific to OPCDA & RSLinx.
As far as RSView32 is concerned these could still be helpful coz you said you are using the OPCDA UDS rather than the RSView32 UDS, correct?
Sucess! For some reason, reentering the UDS IP in the xMII datasource fixed the problem, and it's now fetching tags flawlesly. Weird...
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Good for you. A note though -
In my experience so far, <b>RSLinx</b> (OPCDA UDS) has worked flawlessly as a service.After all It is no different from any other OPC servers available - Kepware, U-CON, Matrikon etc.
As Martin mentioned in one of the posts it is the <b>RSView</b> that should be started as an EXE rather than a service.
The OPC Server can be configured to be a service, <b>BUT</b> if you are in a Windows 2003 environment, you will have to open up the security such that it <i>will</i> run. I'm think the reason the EXE mode runs is because the person who ran the program has all the permissions necessary to pass the security checks.
To fix the security issues, you'll have to go into the Component Services MMC snap-in (to open up the OPC Server) and/or the Services snap-in (to set the UDSs User credentials).
Well, following some advice from another thread i reinstalled RSView. I'm still battling to get its OPC server back on, but atleast the RSView direct UDS allows selecting tags from the SCADA. The problem still persists though - even while the UDS admin browses tags just fine, it simply won't connect to xMII, either starting it as service or as standalone program.
There's only a bunch of configuration options for this UDS:
<b>Datasource=RSVIEWUDS.DataSource
Port=8090
CacheMode=None
Syncrhonize=False</b>
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Yes. This is a test PC providing a simple production scenario; it has installed:
- RSLinx v2.42.0b18
- RSView v6.50
- UDS Admin v2.5.0.4
- OPC UDS v2.5.0.0
- OPC HDA UDS v2.5.0.4
- RSView UDS v2.5.0.0
In summary, RSLinx via OPC is now working; RSView via direct driver allows tag browsing from the UDS admin but not from xMII, and RSView via OPC is currently not working (RSView won't start its OPC server, unrelated).
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