Panasonic GM1 User Manual page 495

■
Count method
● You can select from the three types shown in the table below according to the input device to
be connected.
● The count behavior changes according to the settings of a multiplication factor, as described
on the following pages.
Count method
Method Connection
2-phase
(Phase
differen
ce)
Individu
al
Directio
n
detectio
n
Count operation of 2-phase input (Phase difference input)
Multiplic
ation
Multiply
by 1
Multiply
by 2
WUME-GM1RTXOP-01
Timing chart
Incrementation
12.6 High-speed Counter Function
Count
For 2-phase input, the input A signal and
input B signal of each counter are connected
to phase A and phase B, respectively, in the
encoder.
The count direction depends on the phase
difference between phases A and B. When
phase A is ahead of phase B by 90 degrees
in terms of the electrical angle, the count
value is incremented. When phase A is
behind phase B by 90 degrees in terms of the
electrical angle, the count value is
decremented.
For individual input, the counter is
incremented when the level of the input A
signal rises or falls, and decremented when
the level of the input B signal rises or falls.
For direction detection input, the count signal
is connected to the input A signal. The count
direction is controlled by the direction signal
level of the input B signal.
When the input B signal is OFF, the counter is
incremented when the level of the input A
signal rises or falls. When the input B signal is
ON, the counter is decremented.
Decrementation
12-33