Execution Data Backup Function - Mitsubishi Electric MELSEC-Q Series User Manual

14.3 Execution data backup function

Buffer memory/Internal memory
Parameters ([Pr.1] to [Pr.57], [Pr.80] to [Pr.96], [Pr.113],
[Pr.132])
Positioning data (No. 1 to 600)
Block start data (No. 7000 to 7004)
Servo parameters ([Pr.101],
MR-J4-B use: PA, PB, PC, PD, PE, PS, PF, Po, PL)
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
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.
[1] Execution data backup (written to flash ROM) means
• The backup is executed with a sequence program.
• The backup 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".
Flash ROM/Internal memory (nonvolatile)
Parameters ([Pr.1] to [Pr.57], [Pr.80] to [Pr.96], [Pr.113],
[Pr.132])
Positioning data (No. 1 to 600)
Block start data (No. 7000 to 7004)
Servo parameters ([Pr.101],
MR-J4-B use: PA, PB, PC, PD, PE, PS, PF, Po, PL)
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Chapter 14 Common Functions