Advantech APAX-5000 Series User Manual page 90

Pulse/DIR, With Reload, Count Once, DI Gate Enable, High level, Not Retrigger-
able
Figure 3.24 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 value is high level, 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 3.38 Pulse/DIR, With Reload, Count Once, DI Gate Enable, High level,
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
.........
82
0xF1
0x10