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DO/DI Proof


Misc microblock

The DO/DI Proof microblock verifies proper equipment operation by comparing the status of a digital input with the status of a corresponding digital output.

For example, the microblock can compare an input indicating the fan's on or off status with the output that turns the fan on or off. If the two inputs do not receive the same signal, the DO/DI Proof microblock provides two outputs that can be used to trigger alarms.

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