Error reading data from both DCOM and Gateway service (Can connect and list)

[leon-h-a]

Hello,

I'm able to connect and list groups both over the DCOM and Gateway Service but when trying to grab values, I get these errors:

• DCOM:

Process finished with exit code -1073741819 (0xC0000005)

• Gateway service:

Pyro4.errors.ConnectionClosedError: receiving: connection lost: [WinError 10054] An existing connection was forcibly closed by the remote host

Server hierarchy:

Code to read values:

• DCOM opc = OpenOPC.client() opc.connect("Matrikon.OPC.Simulation.1") data = opc.read('Random.Real8')[0] or data = opc.read('test.blah')[0] > (neither one works) Program Exits print(data)

• Gateway Service opchost = 'ip_string' taglist = ['test.blah'] or taglist = ['Random.Real8'] > (neither works) opc = OpenOPC.open_client(opchost) print(opc.list('Configured Aliases')) > returns a list: ['Server Configuration', 'Alias Configuration'] a = opc.read(taglist) > Exits like mentioned above

[Voolodimer]

Hello! Have you solved this problem?

[ottowayi]

I ran into a similar issue, my Python was 64-bit and the OPC server was 32-bit. Everything was looking like it worked up until I went to read something, then it just exited with no errors or anything. I changed to 32-bit Python and the issue went away.