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App-142
*2: The module whose first 5 digits of serial No. is “09012” or later.
(13) 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.
TableApp.3.13 Special relay
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 does not start if the I/O No. of the copy
destination (standby system CPU module: 3D1H) 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
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.3.14 Special relay
Number Name Meaning Explanation
Set by
(When Set)
Corresp
onding
Host
SM
*2
Corresponding
CPU
SM1600
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
SM1610
Other system
diagnostics error
OFF : No error
ON : Error
• Turns on when a diagnostics error occurs. (Includes
error detection when annunciator is ON, and by CHK
instruction)
• Corresponds to status of SM0 at other system
S (Each END) SM0
QnPRH
SM1611
Other systems self
diagnostics error.
OFF : No self diagnostics
error occurred
ON : Self diagnostics error
occurred
• Turns on when a self diagnostics error occurs.
(Does not include error detection when annunciator
is ON, and by CHK instruction)
• Corresponds to status of SM1 at other system
S (Each END) SM1
SM1615
Other system common
error information
OFF : No common error
information present
ON : Common error
information present
• Turns on when there is common error information at
other system
• Corresponds to status of SM5 at other system
S (Each END) SM5
SM1626
Error individual
information for other
systems
OFF : No individual error
information present
ON : Individual error
information present
• Turns on when there is individual error information at
other system
• Corresponds to status of SM16 at other system
S (Each END) SM16
SM1649
Standby system
cancel error flag
OFF to ON:
Cancels error of standby
system
By turning this relay from OFF to ON, the continue error
that occurred in the standby system CPU module can
be canceled.
Use SD1649 to specify the error code of the error to be
canceled.
U
–