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Intelligent Technologies (IT.) D77A I/O Module Products
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MN05002001E
Discrete Combination Modules
Combination modules have the properties of both input and output points in a single module. The behavior of the combination
module’s input and output points are the same as those found in discrete input and output modules.
Figure 19: Discrete Combination Module Operation
D77A-032
Optical
Isolation
Input
Debounce
Logic/Control
Optical Isolation
Output
Drivers
LED
Indication
Output
QCPort
Comm