Selection Of Count Methods - Panasonic FP7 User Manual

Counter Function

7.1.4 Selection of Count Methods

• Select from the following three types according to input devices to be connected.
• In the case of phase input, the count operation varies depending on the settings of
multiplication factor as shown on the next page.
 Count method
Method
Incremental encoder
or
Pulse generator
Direction
distinction
Incremental encoder
or
Pulse generator
Individual
Incremental encoder
or
Pulse generator
Incremental
Phase
encoder
7-8
Connection
Pulse input
Sensor
or
Count direction
Switch
Addition pulse input
Subtraction pulse input
Phase A pulse input
Phase B pulse input
Phase Z input
(Reset input)
Unit
For the direction distinction input, the
count signal is connected to the input
A signal. The count direction is
Input A
controlled by the level of the direction
signal of the input B signal.
When the input B signal is off, the
counter is incremented when the
input A signal rises or falls. When the
Input B
input B signal is on, the counter is
decremented.
Unit
Input A
In the individual input method, the
counter is incremented when the
input A signal rises or falls, and
decremented when the input B signal
rises or falls.
Input B
For the phase input, the input A
signal and input B signal of each
Unit
counter are connected to the phase A
and phase B of an encoder.
Input A
The count direction depends on the
phase difference between the phases
Input B A and B. When the phase A is
proceeding by 90 degrees in
electrical angle than the phase B, the
Input Z
count value is incremented. When the
phase A is delayed by 90 degrees in
electrical angle than the phase B, the
count value is decremented.
Count