Mitsubishi MELSEC Q Series Programming Manual page 1157

(1) Diagnostic information
Number Name
OFF : No error
SM0 Diagnostic errors
ON : Error
OFF : No self-diagnosis
Self-diagnostic
SM1
error
ON : Self-diagnosis
OFF : No error common
Error common
SM5
information ON : Error common
OFF : No error
Error individual
SM16
information
ON : Error individual
SM50 Error reset OFF→ON: Error reset
OFF : Normal
SM51 Battery low latch
ON : Battery low
OFF : Normal
SM52 Battery low
ON : Battery low
Meaning
• This relay turns on if an error is detected by
diagnostics. (Also turns on if an error is
detected by an annunciator or the CHK
instruction.)
• This relay remains on even after the system
returns to normal.
• This relay turns on if an error is detected by
diagnostics. (Also turns on if an error is
detected by an annunciator.)
• This relay remains on even after the system
returns to normal.
• This relay turns on if an error is detected by
self-diagnostics. (Remains off if an error is
detected by an annunciator or the CHK
instruction.)
• This relay remains on even after the system
returns to normal.
errors
• This relay turns on if an error is detected by
self-diagnostics. (Remains off if an error is
detected by an annunciator.)
• This relay remains on even after the system
returns to normal.
information This relay turns on if error common information
data exists when SM0 turns on.
information
individual
This relay turns on if error individual
information
information data exists when SM0 turns on.
information
Conducts error reset operation
• This relay turns on if the battery voltage of
the CPU module or the memory card drops
below the rated value.
• This relay remains on even after the battery
voltage returns to normal.
• Synchronizes with the BAT. LED.
• This relay turns on if the battery voltage of
the CPU module drops below the rated
value.
• This relay remains on even after the battery
voltage returns to normal.
• Synchronous with the ERR. LED.
• This relay has the same specifications as
those of SM51 except that this relay turns off
after the battery voltage returns to normal.
Explanation
(When Set)
S (Error)
S (Error)
Corres-
ponding
Set by
Corresponding
ACPU CPU
M9
Qn(H)
QnPH
QnPRH
New
Q00J/Q00/Q01
QnU
LCPU
Qn(H)
M9008 QnPH
QnPRH
Q00J/Q00/Q01
QnU
LCPU
New
QCPU
LCPU
U
Qn(H)
QnPH
M9007 QnPRH
QnU
LCPU
New Q00J/Q00/Q01
QCPU
M9006
LCPU
App-149
8
8
8
8
A
6
7
8