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CHAPTER 3 CPU MODULE FUNCTIONS
3
3.21 Writing Programs in RUN Status
3.21.3 Precautions for online change
(5) Automatic data transfer to the program memory
The automatic data transfer to the program memory requires time obtained from the following formula.
• L02CPU: (Scan time (s)) × 320 + 4.8 (s)
• L26CPU-BT: (scan time (s)) × 1100 + 15.0 (s)
The number of writes to the program memory (flash ROM) is limited to 100,000 times. When data are written to
the CPU module in the RUN status or the T/C setting values are changed frequently, disable the automatic
transfer to the program memory.
[Tool] [Options...]
When the automatic transfer is set to be disabled, the following message appears after online change. When
selecting "No", the program memory must be batch transferred by a programming tool.
[Online] [Program Memory Batch Download]
The status of the transfer to the program memory can be confirmed by SM165.
To avoid automatic transfer of program
memory data, clear the checkbox.
(Selected by default.)
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