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6.12 Writing in Program during CPU Module RUN
6.12.1 Write during RUN in ladder mode
6
FUNCTIONS
(2) Precautions
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.
Note19
(c) Number of steps enabled for write during RUN at once
A maximum of 512 steps can be written at once during RUN.
Table6.22 Boot source program when write during RUN is performed
Boot source Boot source program status
Memory
card
Note6.19
RAM
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.
ROM 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.
Standard ROM
Note19
Basic
Note6.19
The Basic model QCPU cannot execute boot run from the memory card.
Basic
Note6.19
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