Mitsubishi Q00JCPU User Manual page 304

6
FUNCTIONS
(2) Precautions
Basic
Note6.19
Note19
Basic
Note6.19
6
6.12 Writing in Program during CPU Module RUN
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6.12.1 Write during RUN in ladder mode
Take a note of the following when writing during RUN:
(a) Memory enabled for write during RUN
The memory that can be written during RUN is only program memory.
(b) Write during RUN performed during boot run
Operation is performed as described in Table6.22 when write during RUN is
performed during boot run.
Table6.22 Boot source program when write during RUN is performed
Boot source
Memory
RAM
Note6.19
card
ROM
Standard ROM
(c) Number of steps enabled for write during RUN at once
A maximum of 512 steps can be written at once during RUN.
The Basic model QCPU cannot execute boot run from the memory card.
Note19
Boot source program status
When write during RUN is executed, the boot source program
is also changed.
During boot run, therefore, time is taken until write during RUN
is completed.
When write during RUN is executed, the boot source program
is not changed.
After executing write during RUN, write the program memory
contents to the memory card (ROM)/standard ROM before
powering OFF the PLC or resetting the CPU module.