IMO iSmart V4 - Page 106

Chapter 5 Relay Ladder Logic Programming 92
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High Speed Counter Mode 9 (1KHZ Input A/B Phase counter)
Mode 9 is A/B phase high speed counter is the two phases counter, same bandwidth for pulse period, but pulse is 90
degrees difference.
A/B phase high speed counter functions are same as high speed counter, but parameters are different.
In DC type model, the high speed counter mode 9 will start to count two of 1KHz A/B phase when I01 (A) leads I02 (b),
counter current value will be 0-999999, high speed counter will stop counting when preset value is reached. When output
coil is ON, counter current value will reset to 0 when the count is reset, output coil will OFF.
C
oil M39 is the special coil, A/B is the counting direction flag. When Phase A leads phase B, M39 coil will be OFF,
when phase B leads phase A,M39will be ON;
Counter current value will reset to 0 when the count is reset.
W
hen the current value overflows(The current value is greater than 999999);And next Phase A leads phase B，The current
value will be 0；When the current value overflows(The current value is less than 0);And next Phase B leads phase A,
current value will be 999999.
Symbol
Instruction
①
High Speed Counter Model9
②
High Speed Counter Input
，
I01
、
I02
③
Reset Coil
ON
：
Countercurrent value reset to 0
OFF
：
Counter keeps counting
④
Current value of Counter
：
0~999999
⑤
Preset value of Counter0~999999
⑥
Counter Code
（
C01~C1F, 31 sets counters
）