App
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Appendix 2 Special Register List
APPENDICES
(6) Instruction-Related Registers
TableApp.25 Special register
Number
Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD705
Mask pattern
Mask pattern
• During block operations, turning SM705 ON makes it possible to use the
mask pattern being stored at SD705 (or at SD705 and SD706 if double
words are being used) to operate on all data in the block with the
masked values.
U
New
Q00J/Q00/Q01
Qn(H)
QnPH
QnPRH
QnA
SD706
SD714
Number of
empty
communication
request
registration
areas
0 to 32
• Stores the number of empty blocks in the communications request area
for remote terminal modules connected to the MELSECNET/MINI-S3.
S (During
execution)
D9081
QnA
SD715
IMASK
instruction mask
pattern
Mask pattern
• Patterns masked by use of the IMASK instruction are stored in the
following manner:
S (During
execution)
New
SD716
SD717
SD718
Accumulator
Accumulator
• For use as replacement for accumulators used in A series programs.
S/U
New
SD719
SD720
Program No.
designation for
PLOADP
instruction
Program No.
designation for
PLOADP
instruction
Stores the program number of the program to be loaded by the PLOADP
instruction when designated.
Designation range: 1 to 124
U
New
Qn(H)
QnPH
SD730
No. of empty
areas for CC-
Link
communication
reguest register
area
0 to 32
• Stores the number of empty registration area for the request for
communication with the intelligent device station connected to
A(1S)J61QBT61.
S (During
execution)
New
QnA
SD736
PKEY input
PKEY input
• Special register that temporarily stores keyboard data input by means of
the PKEY instruction.
S (During
execution)
New
SD715
SD716
SD717
l15
l1
l0
l31
l47
l17
l33
l16
l32
b15
b0
b1
to
to
to