App
- 27
Appendix 1 Special Relay List
APPENDICES
*2: The module whose first 5 digits of serial No. is "09012" or later.
(14)For redundant system (Other system CPU information *1)
SM1600 to SM1650 only valid for the CPU redundant system backup mode, so they
cannot be refreshed during the separate mode.
Either the backup mode or the separate mode is valid for the SM4651 to SM1699.
SM1600 to SM1699 are all turned off for stand-alone system.
*1 Stores other system CPU diagnostic information and system information.
*2 This shows the special relay(SM
) for the host system CPU.
Number
Name
Meaning
Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM1593
Setting to access
extension base unit of
standby system CPU
OFF : Error
ON : Ignored
Sets the operation for the case accessing buffer
memory of the intelligent function module mounted on
the extension base unit from the standby system CPU
in separate mode.
OFF : “OPERATION ERROR” (error code: 4112) will be
returned when accessing buffer memory of the
intelligent function module on the extension base
unit from the standby system CPU.
ON : No processing is performed when accessing
buffer memory of intelligent function module on
the extension base unit from the standby system
CPU.
U
New
QnPRH
*2
SM1595
Memory copy to other
system start flag
OFF : Start memory copy
ON : No memory copy
initiated
• When SM1595 is turned from OFF to ON, memory
copy from control system to standby system starts.
Note that when SM1595 is turned from OFF to ON,
memory copy dos not start if the I/O No. of the copy
destination (standby system CPU module: 3D1
H
) is
not stored in SD1595.
QnPRH
SM1596
Memory copy to other
system status flag
OFF : Memory copy not
executed
ON : Memory copy executed
• Turns on while memory is copied to other system.
• Turns off when memory copy execution has
completed.
S (Starting to
copy/finish)
SM1597
Memory copy to other
system completion
flag
OFF : Memory copy not
completed
ON : Memory copy
completed
• Turns on once the memory copying to the other
system has completed.
S (finish)/U
New
QnPRH
SM1598
Copy contents of
standard ROM during
memory copy
OFF : Copy standard ROM
data
ON : Standard ROM data is
not copied
• If set to on by user, the standard ROM data is not
copied to the other system while memory copy is
executing.
U
TableApp.15 Special relay
Number
Name
Meaning
Explanation
Set by
(When Set)
Corresp
onding
Host
SM
*2
Corresponding
CPU
SM1600
Diagnosis error
OFF : No error
ON : Error
• Turns on if a error occurs in the diagnosis results.
(Including external diagnosis)
• Remains on even if returns to normal thereafter.
S (Each END)
SM0
Q4AR
Other system error
flag
OFF : No error
ON : Error
• Turns on when an error occurs during redundant
system. Error check (Turns on single bit of SD1600.)
• Is off when no errors are present
S (Each END)
–
QnPRH
SM1601
Self diagnosis error
OFF : No self diagnosis error
ON : Self diagnosis error
• Turns on when an error occurs in the self-diagnosis
results.
• Remains on even if returns to normal thereafter.
S (Each END)
SM1
Q4AR
SM1605
Error common
information
OFF : No error common
information
ON : Error common
information
• Turns on when there is error common information
and the SM1600 is on.
S (Each END)
SM5
