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Frequently asked questions about the Omron FINS plugin:

1. Connected several controllers, but the polling of values is slow

When multiple devices are added to a node, they are polled sequentially, so polling is slower.

You can add each device to a individual node - this will lead to parallel polling and speed it up.

Note. In this mode it is necessary to set the dynamic Source Port (set it to 0 - see point 2) - otherwise packets from different controllers can be mixed up.

 

2. Cannot communicate with the controller when third-party software (CX-Programmer, other OPC) is running.

By default the OPC server uses port 9600 for requests and responses (since a number of Omron controllers always send a response to port 9600). So if the port is already occupied by another program, the OPC will not be able to initialize it and there will be no exchange.

In this case you can do it in two ways:

1. In the OPC server settings, set the IP Source Port = 0. In this case the port will be selected automatically by the system. This option will work if the controller model responds to the port from which the request came.

2. Close the other software.