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The GE-Emerson IC200MDD842 VersaMax ESCP Discrete I/O Module includes positive or sourcing type outputs. Each point has electronic over-current protection and short circuit protection, and generates a fault if either condition exists. They switch the loads to the positive side of the DC supply and thus supply current to the loads.
Inputs in each group can be either positive logic inputs that receive current from input devices and return the current on the common, or negative-logic inputs that receives current from the common and return current to the input device. Input devices are connected between the input terminals and common terminals.
Negative-logic functionality requires module version IC200MDD842B or higher.
An external DC power supply must be provided to switch power to the loads. Intelligent processing for this module is performed by the CPU or NIU. The module provides 16 bits of discrete input data and receives 16 bits of discrete output data.
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