hit counter script

Mitsubishi Electric FX5 User Manual page 189

Melsec iq-f series
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■2 phase, 2 input counter [4 edge count]
Counting method of 2 phase, 2 input counter [4 edge count] is as follows.
Up/down counter
At up-counting
At down-counting
At up-counting
Input A phase
+1 +1
Input B phase
■Internal clock
Counting method of internal clock is as follows.
Count direction switching bit
Internal clock (1 MHz)
Current value
Under ordinary circumstances, the internal clock counts up/down by 1 MHz clock. External input is not used.
Counter timing
1 count up when input B phase is OFF and input A phase switches OFF→ON
1 count up when input A phase is ON and input B phase switches OFF→ON
1 count up when input B phase is ON and input A phase switches ON→OFF
1 count up when input A phase is OFF and input B phase switches ON→OFF
1 count down when input A phase is OFF and input B phase switches OFF→ON
1 count down when input B phase is ON and input A phase switches OFF→ON
1 count down when input A phase is ON and input B phase switches ON→OFF
1 count down when input B phase is OFF and input A phase switches ON→OFF
At down-counting
+1
+1
-1
OFF
ON
OFF
Up counting
-1
-1
-1
ON
Down counting
24 HIGH-SPEED INPUT/OUTPUT FUNCTION
24.1 High-speed Counter Function
24
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