Loss of IAC between 2 applications within the same controller during download
We have experienced possible IAC loss between 2 applications within the same controller which leads PM865 triggerd plant shutdown during downloading. We are investigating both system and application side but it will be very difficult to re-produce the issue if this is caused by the timing issue. Manual indicates there is no timeout for IAC loss if within the same controller, therfore we suspect loss caused the plant trip with SIS application.
Is it possible to loss an IAC between 2 applications in the same controller?
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