App - 36 App - 36
MELSEC-Q
APPENDIX
Special Register List (Continued)
Number Name Meaning Explanation
Set by
(When set)
Corresponding
ACPU
D9
Applicable
CPU
SD50 Error reset
Error number that
performs error reset
• Stores error number that performs error reset
UNew + Rem
SD53
AC DOWN
detection
AC DOWN Number
of time for
• Each time the voltage falls below 85% of normal (AC power/65%
DC power) while the CPU module is calculating, it will be saved
as a BIN code with 1 added to the value.
S (Error) D9005
+ Rem
SD60
Blown fuse
number
Number of module
with blown fuse
• Value stored here is the lowest station I/O number of the module
with the blown fuse.
S (Error) D9000
SD61
I/O module
verification
error number
I/O module
verification error
module number
• The lowest I/O number of the module where the I/O module
verification number took place.
S (Error) D9002
+ Rem
SD105
CH1
transmission
speed
setting
(RS232)
Stores the preset
transmission speed
when GX
Developer is used.
K3 : 300bps, K6 : 600bps, K24 : 2400bps, K48 : 4800bps
K96 : 9600bps, K192 : 19.2kbps, K384 : 38.4kbps
K576 : 57.6kbps, K1152 : 115.2kbps
SNew
QCPU
Remote
SD120
Error No. for
external
power
supply OFF
Module No. which
has external power
supply error
• Stores the smallest head No. of the module whose external
power supply is OFF.
Applicable only for Q-series modules (For future use)
S (Error) New
QCPU
Remote
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