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Chapter 14 Common Functions

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.

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.

[2] Control details

The following shows the data that can be written to the flash ROM/internal
memory (nonvolatile) using the "execution data backup function".

Buffer memory/Internal memory

Flash ROM/Internal memory (nonvolatile)

Parameters ([Pr.1] to [Pr.57], [Pr.80] to [Pr.97], [Pr.114])

Positioning data (No. 1 to 600)

Block start data (No. 7000 to 7004)

Servo parameters
([Pr.100], PA, PB, PC, PD, PE, PS, PF, Po, PL)