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1 OVERVIEW
Special relay list
No. Name Meaning Details
Set by
(When set)
Remark
M9000 Fuse blown detection flag
OFF : Normal
ON : Fuse blown module
detected
• Turn on when there is one or more output modules control
of self CPU which fuse has been blown.
Remains on if normal status is restored.
• Turn on if a momentary power interruption of less than
20ms occurred during use of the AC power supply
module, and reset by turning power off to on.
M9005
AC/DC DOWN detection
flag
OFF : AC/DC DOWN
not detected
ON : AC/DC DOWN
detected
• Turn on if a momentary power interruption of less than
10ms occurred during use of the DC power supply
module, and reset by turning power off to on.
M9006 Battery low flag
OFF : Normal
ON : Battery low
• Turned on when the voltage of the external battery
reduces to less than specified value. Turn off when the
voltage of the external battery becomes normal.
• Synchronizes with "BAT. LED"
• Check the voltage of the external battery, only when it is
set with "external battery use" by system setting.
M9007 Battery low latch flag
OFF : Normal
ON : Battery low
• Turn on when the voltage of the external battery reduces
to less than specified value. Remains on if normal status
is restored.
• Synchronizes with "BAT. LED"
• Check the voltage of the external battery, only when it is
set with "external battery use" by system setting.
M9008 Self-diagnostic error flag
OFF : No error
ON : Error
• Turn on when error is found as a result of self-diagnosis.
Remains on if normal status is restored.
M9010 Diagnostic error flag
OFF : No error
ON : Error
• Turn on when error is found as a result of diagnosis.
Remains on if normal status is restored.
S(Occur an error)
New
(Note-1)
M9025 Clock data set request
OFF : Ignored
ON : Set request present
used
• Write clock data stored in D9025 to D9028 to the clock
element when M9025 has changed from off to on.
U
M9026 Clock data error
OFF : No error
ON : Error
• Turn on by clock data (D9025 to D9028) error. S(Request)
M9028 Clock data read request
OFF : Ignored
ON : Read request
• Read clock data from D9025 to D9028 in BCD when
M9028 is on.
U
M9036 Always ON
ON
OFF
• Turn on without regard to position of RUN/STOP switch
on.
M9037 Always OFF
ON
OFF
• Turn off without regard to position of RUN/STOP switch
on.
S(Main processing)
M9060 Diagnostic error reset
OFF
ON : Diagnostic
error reset
• A reset of the diagnostic error is executed. U
New
(Note-1)
M9073 PCPU WDT error flag
ON : Abnormal
OFF : Normal
• Turn on when a "watchdog timer error" is detected by the
Motion CPU self-diagnosis function.
When the Motion CPU detects a WDT error, it executes
an immediate stop without deceleration of the operating
axes.
• The error cause is stored in the "Motion CPU WDT error
cause (D9184)".
S(Occur an error)
M9074
PCPU READY complete
flag
ON : PCPU READY
completion
OFF : PCPU READY
uncompletion
• When the PLC ready flag (M2000) turn off to on, the
fixed parameters, servo parameters and limit switch
output data, etc., are checked, and if no error is detected
this flag turns on.
• Turn off when the PLC ready (M2000) signal turns off.
S(Request)
M9075 Test mode ON flag
ON : TEST mode is in
effect.
OFF : TEST mode is not in
effect.
• This flag status indicates whether a TEST mode
established from a peripheral device is currently in
effect.
• If the TEST mode is not established in response to a
TEST mode request from a peripheral device, the
"TEST mode request error flag (M9078)" will turn on.
S(Request)
M9076
External forced stop
input flag
ON : Forced stop OFF
OFF : Forced stop ON
• This flag status indicate whether the forced stop. S(Operation cycle)
(Note-1) : It adds newly at the Motion controller Q series.