
APPENDICES
APP - 24
MELSEC-A
Table 2.2
Special registers list (Continue)
Number
Name
Description
Details
Applicable CPU
D9052
Error step
Step number in which
an error occurred.
• Stores the step number in which error 84 occurred in the
SFC program in BIN code.
Stores "0" when errors 80, 81 and 82 occurred.
Stored the block starting step number when error 83
occurred.
—
D9053
Error transfer
Transfer condition
number in which an
error occurred.
• Stores the transfer condition number in which error 84
occurred in the SFC program in BIN code.
Stored "0" when errors 80, 81, 82 and 83 occurred.
—
D9054
Error sequence
step
Sequence step number
in which an error
occurred.
• Stores the sequence step number of transfer condition
and operation output in which error 84 occurred in the
SFC program in BIN code.
—
Usable with
AnN
, AnA
,
AnU, A2S,
QCPU-A
(A Mode), A2C,
A0J2H, AnS,
AnSH, A1FX and
A52G.
D9055
Status latch
execution step
number
Status latch execution
step number
• Stores the step number when status latch is executed.
• Stores the step number in a binary value if status latch is
executed in a main sequence program.
• Stores the block number and the step number if status
latch is executed in a SFC program.
Block No.
(BIN)
Step No.
(BIN)
Higher 8 bits
Lower 8 bits
—
Usable with AnA,
A2AS, AnA
bpard, AnU and
QCPU-A
(A Mode).
Stores the software version of the CPU module's internal
system in ASCII codes.
Example: Stores "41
H
" for version A.
Note) The software version of the internal system may be
different from the version marked on the housing.
5: This function is available with the CPU of the
following S/W versions or later.
CPU Type Name
Software Version
A2ACPU (P21/R21), A2ACPU-
S1 (P21/R21)
S/W version W
(Manufactured in July, 1998)
A3ACPU (P21/R21)
S/W version X
(Manufactured in July, 1998)
A2UCPU (S1), A3UCPU,
A4UCPU
S/W version H
(Manufactured in July, 1998)
A1SJHCPU, A1SHCPU,
A2SHCPU
S/W version H
(Manufactured in May, 1998)
A2USCPU (S1)
S/W version Y
(Manufactured in July, 1998)
A2USHCPU-S1
S/W version E
(Manufactured in July, 1998)
D9060
Software version
Software version of
internal system
Can be used only
with AnU, A2US,
or AnSH.
5
: Usable with AnN and AnA which are compatible with SFC.
For the AnN and AnA which are compatible with SFC, refer to the MELSAP-ll Programming Manual.
Содержание A1SH
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