13-4 VersaMax Modules, Power Supplies and Carriers User's Manual
GFK-1504N
13
IC200MDD841
Mixed Module, 24 V DC Positive Logic Input 20 Points / Output 12 Point /
(4) High-speed Counter, PWM, or Pulse Train Configurable Points
Default Operation
The default parameters of this module can be used in many applications. In
default mode, the module operates as described below.
Inputs 1 - 8 are one group of high-speed counter inputs that operate as:
Four Type A counters.
Each counter counts upward
When a counter reaches its upper limit, it wraps around and starts over.
Inputs 9 - 16 are one group of standard inputs with a common return.
Inputs 17 - 20 are one group of standard inputs with a common return.
Four of the outputs are High-speed Counter outputs. Each High-speed Counter
output is dedicated to a corresponding High-speed Counter input.
Eight additional outputs are standard outputs.
The counter outputs use a default ON preset of +32,767, and an OFF preset of
0. If the count reaches the ON preset, the counter’s output is turned on. If the
count reaches the OFF preset, the counter’s output is turned OFF.
When the system is in Stop mode, the High-speed Counter outputs continue to
respond to the counter inputs and the standard outputs turn off. Output presets
continue to operate as if the CPU/NIU were present, changing state to reflect
the counter Accumulators.
In default mode, the module can temporarily change this basic operation in
response to up to four commands from the CPU or NIU. These commands can
be sent to the module in its regular output data.
Each counter output can be turned on or off on command.
Each counter can be reset to 0.
Each counter’s accumulator (current count) register can be loaded with any
value from 0 to 32757.
Each counter’s lower and upper limits can be changed.
Each counter’s accumulator can be incremented by a specific amount
above its present actual value.
The count direction can be changed to down (or back to up).
The timebase for each counter’s counts-per-timebase, which measures its
rate of counting, can be changed from1000mS to any value from 10mS to
1000mS.
Each counter’s preload value can be changed
