App-150
SM53
AC/DC DOWN
detection
OFF : AC/DC DOWN
not detected
ON : AC/DC DOWN
detected
This relay turns on if a momentary power
failure within 20ms occurs during use of an AC
power supply module. This relay is reset when
the CPU module is powered off and then on.
S (Error)
M9005
QCPU
This relay turns on if a momentary power
failure within 10ms occurs during use of an AC
power supply module. This relay is reset when
the CPU module is powered off and then on.
LCPU
SM53
AC/DC DOWN
detection
OFF : AC/DC DOWN
not detected
ON : AC/DC DOWN
detected
This relay turns on if a momentary power
failure within 10ms occurs during use of a DC
power supply module. This relay is reset when
the CPU module is powered off and then on.
M9005
QCPU
LCPU
SM56 Operation error
OFF : Normal
ON : Operation error
• This relay turns on if an operation error
occurs.
• This relay remains on even after the system
returns to normal.
M9011
SM60
Blown fuse
detection
OFF : Normal
ON : Module with
blown fuse
• Turns on if there is at least one output
module whose fuse has blown.
• This relay remains on even after the system
returns to normal.
• Output modules on remote I/O stations are
also checked.
M9000 QCPU
SM61
I/O module verify
error
OFF : Normal
ON : Error
• This relay turns on if the status of the I/O
module differs from that registered at power-
on.
• This relay remains on even after the system
returns to normal.
• I/O modules on remote I/O stations are also
checked.
M9002
QCPU
LCPU
SM62
Annunciator
detection
OFF : Not detected
ON : Detected
This relay turns on if at least one annunciator
(F) turns on.
S (Instruction
execution)
M9009
SM80 CHK detection
OFF : Not detected
ON : Detected
• This relay turns on if an error is detected by
the CHK instruction.
• This relay remains on even after the system
returns to normal.
New
Qn(H)
QnPH
QnPRH
SM84 Error clear OFF→ON: Error clear
This relay is turned on to clear an error set to
SD84 and SD85.
U
LCPU
SM90
Startup of
monitoring timer
for step transition
(Enabled only
when SFC
program exists)
OFF : Not started
(monitoring timer
reset)
ON : Started
(monitoring timer
started)
Corresponds to
SD90
• Goes ON when
measurement of step
transition monitoring
timer is commenced.
• Resets step transition
monitoring timer when
it goes OFF.
M9108
Qn(H)
QnPH
QnPRH
SM91
Corresponds to
SD91
M9109
SM92
Corresponds to
SD92
M9110
SM93
Corresponds to
SD93
M9111
SM94
Corresponds to
SD94
M9112
SM95
Corresponds to
SD95
M9113
SM96
Corresponds to
SD96
M9114
SM97
Corresponds to
SD97
NewSM98
Corresponds to
SD98
SM99
Corresponds to
SD99
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
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