Figure 3.35A/B Phase 4X, With Reload, Count Repetitively - Advantech APAX-5013 User Manual

A/B Phase 4X, With Reload, Count Repetitively
Figure 3.21 shows A/B Phase 2X mode, Ch0_A and Ch0_B provide the counting
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 repetitively.
Ch0_A
Ch0_B
Counter0
Enable
Counter0
0x33 0x32 0x31 0x30
Value
Counter0
Overflow
Ch0_A
Ch0_B
Counter 0
Enable
Counter 0
0x33 0x34 0x35 0x36
Value
Counter0
Underflow
Figure 3.35 A/B Phase 4X, With Reload, Count Repetitively
DI Gate Function No Alarm

DI Gate Disable : Whatever the DI value is, the counter still continuously counts

DI Gate Enable : If the DI value is set to high, the counter can count. Otherwise,
the counter will be stopped counting.

Not Retriggerable : It means DI0 only can trigger the counter to count once.

Retriggerable : It means DI0 can trigger the counter to count anytime.

High level : the DI0 trigger level

Low level : the DI0 trigger level

Rising Edge : the DI0 trigger edge

Falling Edge : the DI0 trigger edge

Rising Edge Start : When DI0 status changes from low to high, the counter will
start to count. After start, whatever the DI0 status, the counter still counts until
the counter0 is disabled.

Falling Edge Start : When DI0 status changes from high to low, the counter will
start to count. After start, whatever the DI0 status, the counter still counts until
the counter0 is disabled.
............
0x2F 0x30 0x31 0x32
0x37 0x36 0x35 0x34 ............
79
............
0xF ..F 0x33 0x34 0x35 0x36
0x00 0x33 0x32 0x31 0x30 ............
APAX-5000 I/O Series User Manual
0xF ..F 0x33 0x34 0x35
0x00 0x33 0x32