Uses of Detections

When IEC receives a message, it starts to detect the message according to the detections and target groups in the detection order list. The detection order list is processed from top to bottom. For example, IEC starts to look at the received message and check if it fits the MBM target group in the XML detection. If it does not fit, IEC checks if the message fits the MVX_S0_R0 target group, and so on, until it finds a matching target group for the message. If there is no matching target group, the message fails and the message is set to "detection failed" status.

In the area for Unused Targets, all the detections and the defined target groups for that detection are shown.

In the area for Targets for Selected Groups, all the detections and target groups that you selected from the Unused Target area are shown. IEC uses this detection order in the Processes tab and in the Detection step.

Note: When you create target groups and put them in the detection order, the problem of shadowing can arise.

When you create message agreements, you must complete all field definitions. If only the "Name" field was specified, an exception error may occur. This error results to the message to remain in "Detect" state. If this error occurs, go back to the agreement and complete the field definitions.