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3.21 Writing Programs in RUN Status
There are two types of writing programs to the CPU module while it is in the RUN status.
• Online change (ladder mode) ( Page 136, Section 3.21.1)
• Online change (files) ( Page 137, Section 3.21.2)
To perform from multiple programming tools, use a pointer so that data are relatively written to the CPU module.
( Page 137, Section 3.21.2)
3.21.1 Online change (ladder mode)
Programs are written by a ladder block unit.
Online change can be performed only for the program memory (program cache memory).
Up to 512 steps can be batch-written.
(1) The reserved area for online change
A program file has an area designated as reserved area for online change to support the one that changes
number of steps. The change in the number of steps does not affect the program file size if the change is within
the reserved area for online change. If more steps are required for the reserved area for online change during
performing an online change, change the setting.
A program is written in units of ladder blocks.
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