GE VersaMax IC200PWR001 User Manual page 452

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
Type B Counter
The Type B counter uses two counter input signals for A-Quad-B counting. The
phase relationship between counter inputs A and B determines whether the
accumulator is incremented or decremented on a transition of either counter
input. The count direction is up if A leads B.
The count direction is down if A lags B.
The Type B counter has a Strobe register, a Preload register, a 16-bit
Accumulator, and a Counts-per-Timebase register. These operate as
described for Type A counters.
The Type B counter can have one output that is activated based on selected On
and Off preset values.
13-12 VersaMax Modules, Power Supplies and Carriers User's Manual
A
B
COUNT
Accumulator
N
Value
A
B
COUNT
Accumulator
N
Value
PRELOAD
COUNT A
COUNT B
PRELOAD
STROBE
INPUT
STROBE
N + 6
N + 6
Up/Down Counter
Preload Value
(16 bit)
Accumulator
(16 bit)
Counts Per
Time Base
(16*bit)
Strobe Register
On/Off Presets
OUTPUT
GFK-1504N