Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 48

■When "Execute END Processing between Programs" is enabled
The device/label access service processing, such as access to devices, is performed between program executions and/or
during the END processing. Therefore, when monitoring is performed in the situation where a device value is processed
across programs, values of ongoing operation may be read out.
and monitoring is performed for the file registers, unintended data may be obtained. ( GX Works3 Operating Manual)
*1 Because the timing of monitoring (during execution of a program or the END processing) cannot be specified, values of ongoing
operation may be read out.
1 RUNNING A PROGRAM
46
1.2 Scan Time
*1
Also, when "Use File Register of Each Program" is enabled