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14.3 Execution data backup function
When the buffer memory data of Simple Motion module is rewritten from the PLC CPU,
"the data backed up in the flash ROM/internal memory (nonvolatile)" of Simple Motion
module may differ from "the execution data being used for control (buffer memory
data)".
In this case, the execution data will be lost when the PLC power is turned OFF. (Refer
to Chapter 7 "Memory Configuration and Data Process".)
The "execution data backup function" is used to back up the execution data by writing
to the flash ROM/internal memory (nonvolatile). The data backed up will be written to
the buffer memory when the power is turned ON next time.
POINT
When the Simple Motion module is replaced, all the data in the Simple Motion
module including absolute position data can be backed up (read to) in the personal
computer and restored to (written to) the Simple Motion module again by using the
backup/restore function of GX Works2. Refer to the "Simple Motion Module Setting
Tool Help" for details.
The details shown below explain about the "execution data backup function".
[1] Execution data backup (written to flash ROM) means
[2] Control details
[3] Precautions during control
[4] Execution data backup method
[1] Execution data backup (written to flash ROM) means
• The backup is executed with a sequence program.
• The data is written to the flash ROM by GX Works2.
Refer to the "Simple Motion Module Setting Tool Help" of GX Works2 for the
flash ROM write method by GX Works2.
14 - 6
Chapter 14 Common Functions
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