Mitsubishi Electric MELSEC iQ-R-R00CPU - Page 213

11 DATA LOGGING FUNCTION
11.16 Precautions to Take When Using the Data Logging Function
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■When the data logging function is executed during the execution of another function
The following table lists the cases when the data logging function is executed during the execution of another function.
*1 The data logging function is not included here.
*2 The CPU module data backup/restoration function executed during data logging
*3 It is executed when the trigger logging data collection is completed or data collection for the specified number of storage files is
completed.
Function that has been
already executed
Function to be executed
later
Behavior
Online change (ladder block) Data logging function ■When a step number is specified as the collection start condition or trigger
condition or when a label is specified as the collection start condition, data collection
target, or trigger condition
• The online change (ladder block) is completed.
• The data logging cannot be executed. (An error occurs when the start operation of
the data logging is performed during the online change (ladder block).)
File batch online change ■When a step number is specified as the collection start condition or trigger
condition or when a label is specified as the collection start condition, data collection
target, or trigger condition
• File batch online change is completed.
• The data logging cannot be executed. (An error occurs when the start operation of
the data logging is performed during the file batch online change.)
CPU module data backup function While the CPU module data backup function is being executed, a logging setting file
cannot be written/deleted or a logging setting cannot be registered/cleared.
CPU module data restoration
function
While the CPU module data restoration function is being executed, a logging setting
file cannot be written/read/deleted or a logging setting cannot be registered/cleared.
iQ Sensor Solution data backup/
restoration function
While the iQ Sensor Solution data backup/restoration function is being executed, a
logging setting file cannot be written/deleted or a logging setting cannot be
registered/cleared.
Function specified in the internal
buffer capacity setting
*1
If the internal buffer capacity setting is changed to execute data logging, attempting
to start data logging results in an error. The function already in execution continues to
function normally.
Function not specified in the
internal buffer capacity setting
If the internal buffer capacity setting is changed to execute data logging, attempting
to start data logging results in an error. The function already in execution continues to
function normally.
CPU module data backup
function
*2
Data logging function (Transfer to
the data memory)
*3
While the CPU module data backup function is being executed, a data logging file
cannot be transferred to the data memory.
CPU module data restoration
function
*2
While the CPU module data restoration function is being executed, a data logging file
cannot be transferred to the data memory.