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Device Map
1.6.5 Special registers
The special registers are data registers with special applications and therefore data
should not be written to the special registers in the program.
Number Name Description Page
Special registers
D9008
Self-diagnostic
error
Stores the self-diagnosed error number in BIN. (Refer
to page 22 for the error codes.)
22
D9010
Operation error
step
Stores the step number in BIN, at which an instruction
execution error occurred. After that, data is updated
each time operation error occurs.
—
D9011
Operation error
step
Stores the step number in BIN, at which an instruction
error occurred. Since data is stored into D9011 when
M9011 turns from off to on, D9011 data is not updated
unless M9011 is cleared by the user program.
—
D9014
I/O control
method
3 (fixed): Both input and output refreshes —
D9015
CPU operating
status
Stores the operating status of the PLC function.
—
D9016 Program number
Stores the number that indicates which sequence
program is currently in execution.
1 (fixed): Main program (RAM)
—
D9017
Minimum scan
time
(10ms units)
Stores the scan time at every END that is smaller than
D9017 data, i.e. stores the minimum scan time in BIN.
—
D9018
Scan time
(10ms units)
Stores and updates the scan time at every END in
BIN.
—
D9019
Maximum scan
time
(10ms units)
Stores the scan time at every END that is greater than
D9019 data, i.e. stores the maximum scan time in
BIN.
—
D9062 to
D9093
Remote registers
Special registers for communication with the master
station in CC-Link.
50
RUN
STOP
0
1
B15 B12B11 B8B7 B4B3 B0
RUN
STOP
0
1
RUN
STOP
0
1
Remote run/stop
using GX Developer
Remote run/stop using
sequence parameter setting
Shorting/
opening SQ-SD
Invalid