Mitsubishi Electric Q01UCPU User Manual page 72

(4) Operation processing when operating status of the CPU module changed
RUN/STOP
Sequence
status
program operation
processing
The CPU module
executes the program
RUN  STOP
until the END
instruction and stops.
The CPU module
STOP  RUN
executes the program
from the step 0.
The CPU module performs the following in any of the RUN, STOP, or PAUSE status.
• Refresh processing with I/O modules
• Refresh processing with network modules
• Refresh processing with CC-Link IE Field Network Basic
• Auto refresh processing with intelligent function modules
• Self-diagnostics processing
• Service processing
• Intelligent function module dedicated instruction processing (completion processing only)
• Operation processing of Multiple CPU high speed transmission function
• Setting values for special relay/special register (only for those that should be set during END processing)
Even if the CPU module is in the STOP or PAUSE status, the following operations can be executed.
• I/O monitor or test operation from a programming tool
• Read/Write data from/to external devices using the MC protocol
• Communication with other stations using CC-Link IE or MELSECNET/H
• Communication with CC-Link remote stations
70
CPU module operation processing
External output
The CPU module saves the
output (Y) status
immediately before its
status is changed to STOP
and turns off all the outputs.
The CPU module outputs
data according to the output
mode parameter setting.
( Page 123, Section
3.4)
Device memory
M, L, S, T, C, D
The CPU module holds the device
memory status immediately before
its status is changed to STOP.
The CPU module holds the device
memory status immediately before
its status is changed to STOP.
Note that the CPU module uses
initial device values if those values
are preset.
Local device data are cleared.
Y
The CPU module saves the
output (Y) status
immediately before its
status is changed to STOP
and turns off all the outputs.
The CPU module outputs
data according to the output
mode parameter setting.
( Page 123, Section
3.4)