This module is equipped with 16 digital channels that can be configured either as inputs or outputs. The inputs are designed for a sink circuit, and the outputs are designed for a source circuit.The node number switch for setting the X2X Link address is a unique feature. When modular machine configurations change, it is required, for example, to define certain module groups at a fixed address that is independent of the preceding modules in the line. All subsequent standard modules refer to this offset and use it automatically for addressing purposes.