Panasonic FP-M Hardware Manual page 160

7-5. High-speed Counter Board
Input mode setting
• 2-phase/4-time multiplication mode
Switch position
OFF
1 2 3 4
Operation conditions
INA
ON
OFF
ON
OFF
INB
ON
OFF
ON
OFF
• Individual input mode
Switch position
OFF
1 2 3 4
Operation conditions
INA
ON
OFF
INB
ON
OFF
• Directional input mode
Switch position
OFF
1 2 3 4
Operation conditions
INA
ON
OFF
Note:
• INA: A-phase pulse input, INB: B-phase pulse input
152
Counting mode
INB
Down
ON
Up
OFF
Up
ON
OFF Down
Counting mode
INA
Up
ON
Down
OFF
Down
ON
Up
OFF
Counting mode
INB
Up
—
Counting mode
INA
Down
—
Counting mode
INB
Up
ON
Down
OFF
Time chart
T
ON
INA
OFF
ON
INB
OFF
t t t
0 1 2
Number
0 1 2 3 4 5 6 5 4 3 2 1
of counts
T 200 µs
t , t , t , t
0 1 2 3
Max. counting speed: 5 kHz
Time chart
ON
INA
OFF
ON
INB
OFF
t t
0 1
Number
0 1
of counts
t , t , t
0 1 2
Max. counting speed: 20 kHz
Time chart
ON
INA
OFF
ON
INB
OFF
t t
0 1
Number
0 1
of counts
t , t , t , t
0 1 2 3
Max. counting speed: 20 kHz
t
3
T/8
t
2
2 1
25 µs
t t
2 3
2 1
25 µs
0
0
0