The protocol can be started and run in up to five instances, one instance for each possible IEC 60870-5-104 client attached. The instances operate independently of one another so it is possible to use different network link (TCP) and transport layer settings for each instance.
The protocol is not in use by default in the device. A function block I5CLPRT1…5 representing the protocol instance must first be dragged to the application configuration sheet using Application Configuration. If only one instance is used, instance block 1 should be chosen. Additional instances can then be added freely.
After the function block has been added to the application configuration sheet, it needs to be enabled by assigning the protocol setting parameter Operation to "1-On".
In order for the protocol instance to populate its own database based on the point mapping defined by the Map Select parameter, the device must be restarted once. So whenever Operation or Map Select settings are changed, the device must be restarted for the protocol instance to be properly set up according to the new configuration.