Advantech APAX-5013 User Manual page 102

Pulse/DIR, With Reload, Count Once, DI Gate Enable, Falling Edge, Not Retrig-
gerable
Figure 3.35 shows pulse/direction mode, Ch0_A provides the counting function, one
pulse, one count. Ch0_B provides the clockwise and counter clockwise function.
When the counter0 is enabled, the couner0 starts to count. If the counter value is
overflow or underflow, it will reset to the defined value (e.g. 0x33) but won't keep
counting. If the DI0 status is falling edge, the counter0 will starts to count but cannot
retriggered. Otherwise, the counter0 will stop counting.
Ch0_A
Ch0_B
Counter0
Enable
DI0
Counter 0
Value
Counter0
Overflow
Ch0_A
Ch0_B
Counter0
Enable
DI0
Counter 0
Value
Counter0
Underflow
Figure 3.50 Pulse/DIR, With Reload, Count Once, DI Gate Enable, Falling Edge,
APAX-5000 I/O Series User Manual
Down
0x33 0x32 0x31 0x32
Up
0x33 0x34 0x35 0x34
Not Retriggerable
Up
.........
0x33 0x34 0xF0
Down
.........
0x33 0x32 0x11
94
0xF1
0x10