Digital Inputs - Quest Controls TELSEC MP2x User Manual

6.3 Digital Inputs

Inputs on the MP2x that are digital inputs whether they are dry contact closures or wet can be
connected to the unit and then defined for polling in the MP2x. Digital inputs can be either dry normally
open, dry normally closed, wet normally open or wet normally closed. Wet contacts mean there is an
external voltage being used. This voltage can be 0-60VDC. Refer to the register map and select the
appropriate register based on the type of input being monitored. For example, if you connect a dry
normally closed contact to input 15 of the MP2x and want it to show a 1 (ON) when open and a 0 (OFF)
when closed then define the Modbus point as follows:
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Rev 2.1 10/21/21 - 14 - TELSEC MP2X User Guide