Mitsubishi Electric MELSEC iQ-R Series User Manual page 294

Auto logging start conditions
Auto logging starts in the following cases.
■Inserting the SD memory card with the auto logging setting while the CPU module is running
Auto logging starts when the SD memory card with the auto logging setting is inserted while the CPU module is running.
(When the CPU module is in the STOP state, auto logging starts by changing the state from STOP to RUN.)
If data logging is in progress before the SD memory card with the auto logging setting is inserted, auto logging does not start.
■Inserting the SD memory card with the auto logging setting while the CPU module is off or
being reset, and powering on or resetting the CPU module
Auto logging starts when the CPU module is powered on or reset after the SD memory card with the auto logging setting is
inserted while it is off or being reset. If data logging is in progress, powering on or resetting the CPU module executes auto
logging instead of the data logging.
Conditions for auto logging completion
Auto logging completes when a completion condition is met as described in the following table. These completion conditions
can also be configured in combination with each other. When they are configured in combination, auto logging completes as
soon as one of the conditions is met.
Completion condition
Data logging stop
Complete with timer
■When "Data logging stop" is selected
Auto logging is assumed to be completed if all the settings or any of auto logging stops
*1 Here the term "stop" means one of the following:
 Continuous logging: When the "Number of files to be saved" setting configured in the save setting has been exceeded and data logging
has been completed.
 Trigger logging: When as much data as the number of records specified in "Number of records" has been collected, the collected data
has been written to the SD memory card, and data logging has been completed.
 When the user has operated CPU Module Logging Configuration Tool to stop data logging.
• If "When any of the data loggings stops" is selected, the behavior of any other data logging sessions than
stopped is the same as the behavior that occurs upon the elapse of the time configured using "Complete
with timer".
• When completing auto logging for continuous logging, do not select "Overwrite" for the operation at the time
when the number of files exceeds the save setting because doing so results in failure to stop data logging;
instead, select "Stop".
■When "Complete with timer" is selected
When the operating time since the start of data logging reaches the specified time, the CPU module completes auto logging
by moving all the data collected so far from the internal buffer to the SD memory card. If trigger logging has not yet collected
as much data as the number of records specified "Number of logging lines", however, the CPU module does not store any
data including the collected data.
The timer is cleared to zero when auto logging is suspended and resumed by stopping and running the CPU
module or turning off and on the CPU module or resetting it before the completion of auto logging. If auto
logging is suspended by the turning on of the special relay (Data logging suspend/resume flag), the timer
continues to run even while data logging is suspended.
20 DATA LOGGING FUNCTION
292
20.11 Auto Logging
Description
Choose one of the following:
• When all data loggings stop
• When any of the data loggings stops
Auto logging is stopped when the specified time has elapsed after the start of data logging.
Elapsed time setting range: 1 second to 86400 seconds (unit: second)
*1
.