Mitsubishi Electric MELSEC iQ-F FX5 - Instruction related; Latch area

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APPX
Appendix 2 Special Register List
Instruction related
The special registers related to instruction execution are shown below.
Latch area
The special registers for latch area are shown below.
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
SD757 Current interrupt priority This register stores the interrupt priority of the interrupt program
being executed.
1 to 3: Priority for the interrupt pointer of the interrupt program
currently being executed
0: No interrupt operation (default)
R
SD758 Interrupt disabling for each
priority setting value
This register stores the disable interrupt priority according to the
disable interrupt instruction (DI), disable interrupt after the setting
priority instruction (DI), and enable interrupt instruction (EI).
1: Disable interrupt priority 1 or less. (Disable interrupts of all
priorities) (default value)
2: Disable interrupt priority 2 or 3.
3: Disable interrupt priority 3.
0: No priority. (Enable interrupt of all priority)
R
SD771 Specification of the number of
write instruction executions to
data memory
This register stores the setting value of limitation in the number of
write operations in one day by instruction executions.
R/W
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
SD953 Backup error cause The cause of the error that occurred during the data backup is
stored.
• 0: No error
• Other than 0: Error code
"0" is set at the start of the data backup.
R
SD954 Restoration target data setting Set the target data to be restored with the data restoration function.
0: All the target data
1: Device/label data only
2: All target data excluding device/label data
R/W
SD955 Restoration function setting Set the data restoration function using the following bit pattern.
(OFF: Disabled, ON: Enabled)
b0: Auto restoration request
b1: Initialization setting at the automatic restoration
b13: Restoration target folder
b14: Restoration for the special relay and special register
b15: Setting of operation after restoration
R/W
SD956 Restoration target date folder
setting
Store the target folder (date folder) of the data restoration using BCD
code.
(1) Day (1 to 31)
(2) Month (1 to 12)
(3) Year (last two digits) (0 to 99)
(4) Year (first two digits) (0 to 99)
[Example] To specify the date folder of June 15 2015, store
"20150615H".
R/W
SD957
SD958 Restoration target number
folder setting
Specify the target folder of the data restoration.
1 to 32767: Serial number of the backup folder (*****) in a date folder
(00001 to 32767)
R/W
b13b14b15
b0b1
0
SD957
b15 b8 b7 b0b31 b24 b23 b16
(1)(2)(3)(4)
SD956