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Hi there, i have the following problem.
I have a Siemens S7 PLC with a CP 443-1 industrial ethernet card. I also have a OPC server from INAT (www.inat.de). I made a connection between the OPC server and the S7 via TCP/IP it works fine. My problem is that the OPC server is constantly polling for data change in the PLC (this affects network speed).
I want my PLC to connect to the OPC server by an event. for example my PLC is executing his program and there is an alarm, the PLC program detects the alarm and starts communicating with the OPC server which can log this alarm in a database via a OPC client.
my question is, is this possible? has anyone done this before?.. i've tried but i can't get it working..
greets,
Doekele
I have a Siemens S7 PLC with a CP 443-1 industrial ethernet card. I also have a OPC server from INAT (www.inat.de). I made a connection between the OPC server and the S7 via TCP/IP it works fine. My problem is that the OPC server is constantly polling for data change in the PLC (this affects network speed).
I want my PLC to connect to the OPC server by an event. for example my PLC is executing his program and there is an alarm, the PLC program detects the alarm and starts communicating with the OPC server which can log this alarm in a database via a OPC client.
my question is, is this possible? has anyone done this before?.. i've tried but i can't get it working..
greets,
Doekele