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Device Map
Device Map
4.5.4 Special relays
The special relays are internal relays with special applications and therefore should
not be switched on-off in the program.
4.5.5 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
M9008 Self-diagnostic error Turned on by self-diagnosed error.
M9010 Operation error flag
Turned on by an instruction execution error.
Turned off when error is removed.
M9011 Operation error flag
Turned on by an instruction execution error.
Remains on after normal status is restored.
M9036 Normally ON
M9036 and M9037 are turned on and off independently
of STOP or RUN.
M9038 and M9039 change depending on the STOP or
RUN status. In other than the STOP status, M9038 is on
for one scan only and M9039 is off for one scan only.
M9037 Normally OFF
M9038
On only for 1 scan after
RUN
M9039
Off only for 1 scan after
RUN
Number Name Description Page
Special registers
D9008
Self-diagnostic
error
Stores the self-diagnosed error number in BIN. (Refer
to page 118 for the error codes.)
118
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.
—
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