Mitsubishi Electric MELSEC iQ-R Series User Manual page 47

Sampling timing when selecting "Time Specification"
The sampling timing is as follows:
Ex.
The timing is set to 10 milliseconds (10 ms).
(a)
(1) (2)
(5)
(1) I/O refresh
(2) Program operation
(3) END processing
*1*2
(4) Sampling processing
(5) Scan time
(6) Time
(a) Scan execution program
*1 The time required for sampling processing is added to the scan time. For details on the sampling time, refer to the following:
Page 296 Sampling time
*2 If an interrupt program is executed during the END processing, the execution time of the interrupt program is also included in the
sampling time.
Precautions
• Set the timing so that the time specification is longer than the scan time; otherwise, data is sampled during the END
processing only once if multiple sampling intervals and sampling timings for the time specification are included in one scan.
In this case, data is sampled for each scan and the operation will be the same as the each scan.
• If a sampling interval is longer than a saving period, sampled data may not be included in the saving period. In this case,
saving a file fails when a file saving trigger is satisfied and an error occurs in a recorder module/camera recorder module.
A saving period differs depending on the recording method. (Page 18 Recording methods)
10ms
(3) (1) (2)
(5)
10ms
(1) (2) (3)
(3)
(4)
(5)
10ms
(1) (2) (3) (1)
(4)
(5)
(6)
1 FUNCTIONS
1.1 Recording Function
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