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GFK-1504K Chapter 13 Mixed Discrete/High-speed Counter Module 13-15
13
IC200MDD841
Mixed Module, 24VDC Positive Logic Input 20 Points / Output 12 Point /
(4) High Speed Counter, PWM, or Pulse Train Configurable Points
Outputs
Four of the module’s twelve outputs are high speed outputs. These outputs can be
configured as high speed counter, PWM, or pulse train outputs.
Counter Outputs
Each counter output has a preset on and off point that must lie between the counter’s high
and low limits. The output state indicates when the Accumulator value is between the
Preset on and off points. For example, using the Type B counter:
OFF PRESET
VALUE
ON PRESET
VALUE
CORRESPONDING
OUTPUT
OFF
ON
TIME
COUNTS ACCUMULATOR
VALUE
If the output is enabled for the HSC channel being used, the output turns on as shown in
the following table:
Preset closest to
low limit
Output ON Output OFF
ON > ON Preset
< OFF Preset
> OFF Preset
< ON Preset
OFF < OFF Preset
> ON Preset
< ON Preset
> OFF Preset
The output can be either on or off when the Accumulator value lies between the Preset
points.
n - 1
I n c r e a s i n g C o u n t s
O f f
P r e s e t
O n
P r e s e t
n + 1 n
O n
P r e s e t
O f f
P r e s e n t
m - 1 m + 1 m
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