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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.
Number
M9008
Self-diagnostic error
M9010
Operation error flag
M9011
Operation error flag
M9036
Normally ON
M9037
Normally OFF
On only for 1 scan after
M9038
RUN
Off only for 1 scan after
M9039
RUN
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
Self-diagnostic
D9008
error
Operation error
D9010
step
Operation error
D9011
step
I/O control
D9014
method
CPU operating
D9015
status
D9016
Program number
Minimum scan
D9017
time
(10ms units)
Name
Turned on by self-diagnosed error.
Turned on by an instruction execution error.
Turned off when error is removed.
Turned on by an instruction execution error.
Remains on after normal status is restored.
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.
Stores the self-diagnosed error number in BIN. (Refer
to page 118 for the error codes.)
Stores the step number in BIN, at which an instruction
execution error occurred. After that, data is updated
each time operation error occurs.
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.
3 (fixed): Both input and output refreshes
Stores the operating status of the PLC function.
B15
B12B11
Remote run/stop
using GX Developer
0
RUN
1
STOP
Stores the number that indicates which sequence
program is currently in execution.
1 (fixed): Main program (RAM)
Stores the scan time at every END that is smaller than
D9017 data, i.e. stores the minimum scan time in BIN.
Description
Description
B8B7
B4B3
Invalid
Remote run/stop using
sequence parameter setting
0
RUN
1
STOP
112
Page
118
B0
Shorting/
opening SQ-SD
0
RUN
1
STOP
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