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19 BUILT-IN I/O FUNCTION
19.1 High-speed Counter Function
• Operation when preset input logic: positive logic, preset control switch: constant when ON
The preset is constantly executed while the preset input is ON.
• Operation when preset input logic: negative logic, preset control switch: rising edge
The preset is executed when the preset input changes ONOFF.
• Operation when preset input logic: negative logic, preset control switch: falling edge
The preset is executed when the preset input changes OFFON.
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