Enable, Falling Edge, Not Retriggerable - Advantech APAX-5000 Series User Manual

Pulse/DIR, With Reload, Count Repetitively, DI Gate Enable, Falling Edge, Not
Retriggerable
Figure 3.36 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) and keep counting.
If the DI0 status is falling edge, the counter0 will start to count but cannot be retrig-
gered. Otherwise, the counter0 will stop counting.
Ch0_A
Down
Ch0_B
Counter 0
Enable
DI0
Counter 0
0x33 0x32
Value
Counter0
Overflow
Ch0_A
Ch0_B Up
Counter 0
Enable
DI0
Counter 0
0x33 0x34
Value
Counter0
Underflow
Figure 3.51 Pulse/DIR , With Reload , Count Repetitively, DI Gate Enable,
Up
0x33 0xF..F
.........
Down
0x33 0x00
.........
Falling Edge, Not Retriggerable
95
0x33 0x34 0x35 0x36
0x33 0x32 0x31 0x30
APAX-5000 I/O Series User Manual