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19 BUILT-IN I/O FUNCTION
19.1 High-speed Counter Function
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■Description of operation
This section describes the operations when the preset input logic and the preset control switch are combined. The preset
value is set to 0.
• Operation when preset input logic: positive logic, preset control switch: rising edge
The preset is executed when the preset input changes OFFON.
• Operation when preset input logic: positive logic, preset control switch: falling edge
The preset is executed when the preset input changes ONOFF.
• Operation when preset input logic: positive logic, preset control switch: rising edge + falling edge
The preset is executed when the preset input changes OFFON and when it changes ONOFF.
Preset input
Count input
ON
OFF
ON
OFF
Current value
10
9
8
7
6
5
4
3
2
1
0
Preset input
Count input
ON
OFF
ON
OFF
Current value
10
9
8
7
6
5
4
3
2
1
0
Preset input
Count input
ON
OFF
ON
OFF
Current value
10
9
8
7
6
5
4
3
2
1
0