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MELSEC-Q
11 TROUBLESHOOTING
(9) A to Q/QnA conversion correspondences
ACPU special registers D9000 to D9255 correspond to the special registers SD1000 to
SD1255 after A-series to the Q/QnA-series conversion.
These special registers are all set by the system, and users cannot use them to set program
data.
Users who need to set data with these registers should edit the special registers for the
Q/QnA.
However, before conversion users could set data at special registers D9200 to D9255 only,
and after conversion users can also set data at registers 1200 to 1255.
For more detailed information concerning the contents of the ACPU special registers, see the
individual CPU users manual, and the MELSECNET and MELSECNET/B data link system
reference manual.
REMARK
Supplemental explanation on "Special Register for Modification" column
1
For the device numbers for which a special register for modification is specified, modify it to
the special register for QCPU/QnACPU.
2
For the device numbers for which is specified, special register after conversion can be
used.
3
Device numbers for which is specified do not function for QCPU/QnACPU.
Special Register List
ACPU
Special
Conversion
Special
Register after
Conversion
Special
Register for
Modification
Name Meaning Details
Corresponding
CPU
D9000 SD1000
Fuse blown
Number of
module with
blown fuse
•
When fuse blown modules are detected, the lowest
number of detected units is stored in hexadecimal.
(Example: When fuses of Y50 to 6F output modules have
blown, "50" is stored in hexadecimal)
To monitor the number by peripheral devices, perform
monitor operation given in hexadecimal.
(Cleared when all contents of SD1100 to SD1107 are reset
to 0.)
•
Fuse blow check is executed also to the output modules of
remote I/O stations.
•
Stores the module numbers corresponding to setting
switch numbers or base unit slot numbers when fuse blow
occurred.
I/O module for A0J2 Extension base unit
Setting
switch
Stored data
Base unit
slot No.
Stored data
0 1 0 5
1 2 1 6
2 3 2 7
3 4 3 8
4 5
5 6
6 7
7 8
D9001 SD1001
Fuse blown
Number of
module with
blown fuse
• For remote I/O station, value of (module I/O number/10H)
+ 1 is stored.