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PD 622 Digital Input Module, application notes

Feature overview

The PD 622 contains 6 digital input channels.

Because of embedded intelligence within the PD 622, each input channel offers advanced functionality. These functions are integrated into the module itself and only need to be configured for operation, and no additional programming is required. In fact, these unique functions can save a great deal of programming effort.

Since the functions and safety monitors are embedded within the module, they execute independently of external controllers. This ensures safety, ultra fast response and independence from system reaction time.


All PROCES-DATA modules are based on the Channel concept. A channel is a functional object, consisting of both functions and all function related data.


A PD 621 Module consists of 2 channel types.

Definition of general module behaviour and interface

Definition of function and data for digital inputs.


Digital Input Channel modes

Digital Input Channel monitors



Application examples PD 622:



Electrical installation notes:





Related topics:

PD 620 Digital Input module / analogue voltage input

PD 621 Digital Input module