Mitsubishi Electric MELSEC L Series User Manual page 145

The procedure for using the buffer memory is described below.
• To restore offset/gain values onto a new replacement module:
Start
Sets values in Pass data classification setting (Un\G200).
(This setting is not required for the L60DAVL8 and L60DAIL8.)
Turns off, then on, and off again Operating condition
setting request (Y9).
Records the values stored in the following buffer
1
memory areas.*
• Pass data classification setting (Un\G200) (only L60DA4)
2
• Un\G202 to Un\G233*
Turns off the power.
Replaces the D/A converter module.
Turns on the power.
Writes the recorded data in the following buffer memory areas.*
• Pass data classification setting (Un\G200) (only L60DA4)
2
• Un\G202 to Un\G233*
Turns off and then on User range writing request (YA).
Checks that Offset/gain setting mode flag (XA) is on.
Turns on and then off User range writing request (YA).
Turns off, then on, and off again Operating condition
setting request (Y9).
Checks that the replaced D/A converter module operates
with the restored offset/gain values.
End
*1 When replacing modules, you can prevent the saved offset/gain value data from getting deleted, by doing one of the
following before turning the power off:
• Use latch settings for the internal device of the destination module.
• Save the data onto an SD memory card. (use the SP.FWRITE instruction to write data or the SP.FREAD
instruction to read data.)
• Store the saved data
*2 The area to be used differs depends on the module used.
For details, refer to the following.
• List of Buffer Memory Address (
For the source D/A converter module
1
For the destination D/A converter module
Page 30, Section 3.5)
CHAPTER 8 FUNCTIONS
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