Hi everyone,
I have two questions regarding OPC services on DeltaV 11.3 :
a) Is there any way I could read on a module some of the diadnostic parameters of OPC Subsystem on an Application Station, i.e., OInteg, Clients, etc.?
b) Is there any way to manage the conecction clients to the OPC Subsystem, i.e., to force a disconnect on some particular Client connection?
Thanks in advanced for your attention and help.
Best Regards,
Marcos Moreno.
Metalurgica Met-Mex Peñoles.
Mexico.
If you double click an item in Diagnostics it shows you the path to that item. You can then access that path via OPC to get the value outside of Diagnostics. The picture above shows a path in Diagnostics and then the same item browsed via OPCWatchit.
I don't know of any way to programmatically manage connectivity with OPC clients. That being said, it could certainly be possible and I just don't know how.
Brian
In reply to Brian Atkinson:
Brian,
Thanks for your contribution. Based on that, I wrote down the PATHs obtained from Diagnostics Interface and I used it in a DeltaV Module by mean of Input Parameters and I was able to obtain, register and build some logic with the information I needed:
APPSTAT/OPC/CLIENTS
APPSTAT/OPC/OINTEG
APPSTAT/OPCMIRROR/CLIENTS
APPSTAT/OPCMIRROR/CLT01_PIPES
Note: Even though when downloading the DeltaV module, a message warning display indicating that the OPCMIRROR paths do not exit, one should download the module anyway and after download is concluded, one place the module on-line and voila, the numeric values related to each path are displayed.
Marcos Moreno
In reply to Marcos Moreno:
Rachelle McWright: Business Development Manager, Dynamic Simulation: U.S. Gulf Coast
In reply to Ivan Eudave:
Iván,
The pending issue is how to manage de OPC Clients conenctions on the Application Station on DeltaV 11.3
The point here is to be able to disconnect some "undesirable" OPC Client programatically or by mean of some interface or manual command issued by DeltaV administrator person.
We have been experiencing an issue on the App Station where the number of conexion OPC Clients reached its maximum limit and when a new request is issued to App Station you receive on the OPC Client interface the message that "OPC licenceses limit", and the OPC Client connection requested is rejected by DeltaV OPC Server.
We have observed trhtough the DeltaV Diagnostics that for some unknown reason, form time to time (aproximately one month), some OPC connection clients became duplicated or even triplicated, so the only way to "reset" OPC connection Clients to its original state is to reboot the App Station; that is why it will be useful to be able to "disconnect some undesirable OPC Client programatically or by mean of some interface or manual command".
I thank in advanced any help you could provide.