National Instruments BridgeVIEW Manuel D’Utilisation

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Appendix A
HMI Function Reference
A-10
© National Instruments Corporation
shutdown indicates that the BridgeVIEW Engine is shutting down. In this 
case, the Read Alarm Summary VI returns immediately with shutdown 
TRUE. You can use shutdown to exit any While Loop that calls Read 
Alarm Summary VI.
changed? is TRUE if a new alarm was read. If changed? is FALSE, the 
Read Alarm Summary VI probably timed out before the Alarm Summary 
Display was updated.