Figure 3.33A/B Phase 4X, No Reload, Count Once - Advantech APAX-5013 User Manual

A/B Phase 4X, No Reload, Count Once
Figure 3.19 shows A/B Phase 4X 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) but won't
keep counting.
Ch0_A
Ch0_B
Counter 0
Enable
Counter 0
0x33 0x32 0x31 0x30
Value
Counter0
Overflow
Ch0_A
Ch0_B
Counter 0
Enable
Counter 0
0x33 0x34 0x35 0x36
Value
Counter0
Underflow
Figure 3.33 A/B Phase 4X, No Reload, Count Once
0x2F 0x30 0x31 0x32 0x33 0x34 0x35 ......
0x37 0x36 0x35 0x34 0x33 0x32 0x31
77
0x00
0xF..F
0xFFFFFFFF
...... 0x00
APAX-5000 I/O Series User Manual