Mitsubishi MELSEC-Q Series User Manual page 104

5
PROCEDURES AND SETTINGS BEFORE
OPERATION
Pulse input
mode
CW/CCW
1 multiple of 2
*2
phases
2 multiples of
2 phases
4 multiples of
2 phases
*1:
*2:
5
- 16 5.6 Intelligent Function Module Switch Setting
(b) Pulse input mode
Sets the pulse input mode applicable to the encoder and pulse generator used.
The following shows the examples of each pulse input mode.
For addition
count
For subtraction
count
For addition
count
For subtraction
count
For addition
count
*2
For subtraction
count
For addition
count
For subtraction
count
IMPORTANT
The module may not be able to operate normally if each I/O signal logic is set
incorrectly. Pay special attention when changing the setting from the default value.
When using the input mode of either 1 multiple of 2 phases or 2 multiples of 2
phases, be sure to input 2-phase pulses. With these input methods, pulses are
counted according to the changes between phase A and phase B.
Count timing
A
Counts on the rising edge (
B
A
Counts on the rising edge (
B
A
When
B
A
When
B
When
A
When
B
When
A
When
B
When
A
When
B
When
When
When
A
When
B
When
When
) of A.
) of B.
A is OFF, counts on the falling edge (
B is OFF, counts on the falling edge (
A is ON, counts on the rising edge (
A is OFF, counts on the falling edge (
B is ON, counts on the rising edge (
B is OFF, counts on the falling edge (
B is OFF, counts on the rising edge (
B is ON, counts on the falling edge (
A is ON, counts on the rising edge (
A is OFF, counts on the falling edge (
B is ON, counts on the rising edge (
B is OFF, counts on the falling edge (
A is OFF, counts on the rising edge (
A is ON, counts on the falling edge (
) of B.
) of A.
) of B.
) of B.
) of A.
) of A.
) of A.
) of A.
) of B.
) of B.
) of A.
) of A.
) of B.
) of B.