Mitsubishi Electric MELSEC iQ-R Series User Manual page 41

Completion notification of trigger logging
When the output to a file is completed after the trigger condition of the trigger logging is satisfied, the specified device value
can be changed and the completion of the trigger logging can be notified.
The operation example to notify the completion of the trigger logging is as follows:
Sampling interval Sampling interval Sampling interval
Trigger condition (Data Trigger condition (Data Trigger condition (Data
comparison M0 = 0) comparison M0 = 0) comparison M0 = 0)
Completion notification Completion notification Completion notification
device (M100) device (M100) device (M100)
The device value of The device value of The device value of
sampling data sampling data sampling data
File output File output File output
 Check whether the trigger condition is satisfied with the sampling interval. In the example above, a trigger occurs and
starts logging when the trigger condition M0 is ON by the ladder program of the CPU module.
 High speed data logger module will output the sampled data to file when 'M0 is ON' is detected (logging processing). After
completing the output to a file, the high speed data module turns ON the 'completion notification device' M100.
 Check that M100 is ON, and the trigger condition M0 and the 'completion notification device' M100 is OFF by the ladder
program of the CPU module.
The value of the completion notification device is changed in the high speed data logger module after the completion of
logging. The value of the completion notification device is not updated until the device value on the CPU module side is
changed. To receive a completion notification again, be sure to change the value of completion notification device before the
next trigger occurs.
After a trigger condition is satisfied, if the trigger condition is satisfied again before the completion notification device is turned
ON, the second trigger completion notification request will be ignored until the first completion notification is completed. Check
that the completion notification device is ON first, then satisfy the trigger condition again after the completion notification
device is turned OFF.
The completion notification device can be specified only for the bit devices of the own station CPU and another station CPU.
• Do not change the device value of sampled data until the completion notification device is ON.
• If the data sampling method is the high speed sampling, the 'completion notification device' cannot be
specified.
Trigger occurrence Trigger occurrence Trigger occurrence
Ò
Ó
ON
OFF
Ô
ON
OFF
1 FUNCTION
1.1 Data Logging Function
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