Trigger - Handshakes

When a group executes, it either completes successfully or an error prevents its execution. The outcome of an execution can be handled in the handshake section of the trigger section of the transaction group. When a group executes successfully or fails to execute, the handshake can write a value back to a tag to alert the user that the group executed successfully or unsuccessfully.

To set handshake values for alerting the user

  1. Create a transaction group with a boolean and a numeric tag.

  2. Set the boolean and the numeric tag to read only.

  3. Go to the Trigger tab and choose to Execute this group on a trigger.

  4. Select the boolean tag as the trigger In the Trigger on item drop down, and select the appropriate execution conditions.

  5. In the bottom section, select Write handshake on success, select the numeric tag to write to, and choose a number that signifies success.

  6. Likewise, in the bottom section, select Write handshake on failure, select the numeric tag to write to, and choose a number that signifies failure.

Trigger – Handshakes

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