That'd be easy if you have a machine where you can modify your ladder. You just write a line in your ladder.
If you have 24V when signal turn on (source type):
M30
-| |--------------(Y10) (that's just an example, put an output value available on your I/O)
Then just make a wire going from your I/O breakout unit corresponding to Y(value) to the 24Vdc coil of the contactor that will enable your sound alarm.
If you have 0V when signal turn on (sink type):
M30
-|/|--------------(Y10) (that's just an example, put an output value available on your I/O)
Then just make a wire going from your I/O breakout unit corresponding to Y(value) to the 24Vdc coil of the contactor that will enable your sound alarm.
Cheers.


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