OpenOPC.open_client() hangs

Question

I'm trying to connect to an OPC Server using the python Open OPC library, it is working fine with a Matrikon OPC Simulator, however when I try to connect it to the actual server the client seems to be hanging on the OpenOPC.open_client method, I added some debug messages in this API and found that the following API in OpenOPC.py is hanging:

import Pyro.core
Pyro.core.initClient(banner=0)
server_obj = Pyro.core.getProxyForURI("PYROLOC://%s:%s/opc" % (host, port))
return server_obj.create_client() #this API is hanging

So if anyone has used OpenOPC to interface with OPC Servers, and has run into similar problem, please let me know.
cheers!

Have you done all the DCOM settings on both the client and the server machines? — Vishweshwar Kapse, May 18 '17 at 07:05
@VishweshwarKapse thats a problem coz i'm trying to use a Linux OPC Client, and I'm not quite sure if DCOM settings is applicable for this, at-least I couldn't find anything in the OpenOPC API, if there is a way to do it, please let me know.! cheers. — Nachiketh, May 18 '17 at 08:22

score 0 · Answer 1 · answered May 02 '18 at 01:11

0

When using OpenOPC in Linux, you can't use DCOM.

So you need to use OpenOPC Gateway Service and the "open_client" method.

This service must be installed and running in the actual OPC server for your client to access it.

answered May 02 '18 at 01:11

Prox

41
1
4

OpenOPC.open_client() hangs

1 Answers1