GFK-1504N
Chapter 7 Discrete Input Modules
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7
IC200MDL631
Input Module, 125 V DC Pos/Neg Logic Isolated 8 Points
Discrete input module IC200MDL631 provides 8 discrete isolated inputs. Inputs
can be either positive logic inputs that receive current from input devices and
return the current on the return, or negative-logic inputs that receive current
from the return and return current to the input device. Input devices are
connected between the input terminals and return terminals.
1234567 831
OK
IC200MDL631
INPUT 125VDC
POS/NEG ISO 8PT
1
2
3
4
5
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7
8
I
Power for module operation comes from the backplane.
Intelligent processing for this module is performed by the CPU or NIU. The
module provides 8 bits of discrete input data.
LED Indicators
Individual green LEDs indicate the on/off state of each input point. Backplane
power must be present for LEDs to provide status of inputs.
The green OK LED is ON when backplane power is present to the module.
Configuration Parameters
The module’s basic input on/off response time is 0.5 ms.
For some applications, it may be preferable to add additional filtering to
compensate for conditions such as noise spikes or switch bounce. Input filter
times of 0ms, 1.0ms, or 7.0ms are selectable via software configuration, for
total response times of 0.5ms, 1.5ms, and 7.5ms respectively. The default is
1.0ms filter time (total response time is 1.5ms).