Mitsubishi Electronics QJ72LP25G Automobile Electronics User Manual


 
103
APPENDICES
A
Appendix 3 Special Relay (SM) for MELSECNET/H (MELSECNET/10 Mode) Remote I/O Station
Do not change the values of special relay set by system using a program or by test operation. Doing so may result in system
down or communication failure.
(1) Diagnostic information
No. Name Meaning Explanation
Set by
(When Set)
Corresponding
ACPU
M9
Corresponding
CPU
SM0
Diagnostic
errors
OFF: No error
ON: Error
• 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.
S
(Error)
New
QnA
Qn(H)
QnPH
QnPRH
Rem
• 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.
Q00J/
Q00/Q01
QnU
SM1
Self-
diagnostic
error
OFF: No error
ON: Error
• 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.
M9008
QnA
Qn(H)
QnPH
QnPRH
Rem
• 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.
New
Q00J/
Q00/Q01
QnU
SM5
Error common
information
OFF: No error
common
information
ON: Error common
information
This relay turns on if error common information
data exists when SM0 turns on.
Rem
SM16
Error
individual
information
OFF: No error
individual
information
ON: Error
individual
information
This relay turns on if error individual
information data exists when SM0 turns on.
SM50 Error reset
OFFON:
Error reset
Conducts error reset operation. U
SM60
Blown fuse
detection
OFF: Normal
ON: Module with
blown fuse
• This relay 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.
S
(Error)
M9000
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.
M90
02