Mitsubishi Electric MELSEC-L02SCPU User Manual page 217

(c) Sampling counter function
The pulses input during the specified sampling time (Sampling time setting ( Page 211, Section 8.4.4 (1)
(b))) can be counted. The sampling count value can be read out into the specified device by the Sampling
count value read instruction (ICSMPRD1(P)) ( Page 248, Section 8.10.1 (5)).
CH1 count enable command
(SM1895)
CH1 current value
(SD1880 and SD1881)
CH1 selected counter function
start command (SM1896)
or
function input signal
Sampling count value
CH1 sampling flag
(SD1882.b3)
No.
Counting of the input pulses starts from 0 on the rising edge of CH1 Selected counter function start command (SM1896) or the
1)
Function input signal.
2) Counting stops when the specified sampling time has elapsed.
3) During execution of the sampling counter function, Sampling flag (SD1882, b3) is set to 1 (Operating).
Even after termination of the sampling counter function, the sampling count value is retained. The sampling count value can be read
4)
out into the specified device by the Sampling count value read instruction (ICSMPRD1(P)).
5) The sampling counter function can be performed regardless of the status of CH1 Count enable command (SM1895).
ON
OFF
150
100
50
0
1)
ON
OFF
T
150
100
2)
50
0
ON 3)
-50
OFF
Description of operation
CHAPTER 8 HIGH-SPEED COUNTER FUNCTION
5)
T T
4)
T: Sampling time
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