App-180
(13) Redundant system (other system CPU information
*1
)
The special relay (SM1600 to SM1649) is valid when the redundant system is in backup mode and is invalid in
separate mode. All bits are set to off for stand-alone systems.
*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
SM
*2
Correspo
nding
CPU
SM1600
Other system
error flag
OFF : No error
ON : Error
• This relay turns on if an error is detected by error
check for redundant system. (This relay turns on
when any of the SD1600 bits turns on.)
• This relay turns off when an error is cleared.
S (Every END
processing)
-
QnPRH
SM1610
Other system
diagnostics error
OFF : No error
ON : Error
• This relay turns on if a diagnostic error occurs in
the CPU module in the other system. (Also turns
off when an annunciator turns on and when an
error is detected by the CHK instruction.)
• The SM0 status for the CPU module in the other
system is reflected.
SM0
SM1611
Other systems
self diagnostics
error.
OFF : No self
diagnostics error
occurred
ON : Self diagnostics
error occurred
• This relay turns on if a self-diagnostics error
occurred in the CPU module in the other system.
(Excluding error detections by an annunciator
and the CHK instruction.)
• The SM1 status for the CPU module in the other
system is reflected.
SM1
SM1615
Other system
common error
information
OFF : No common error
information
present
ON : Common error
information
present
• This relay turns on when there is error common
information data for an error occurred in the
CPU module in the other system.
• The SM5 status for the CPU module in the other
system is reflected.
SM5
SM1626
Error individual
information for
other systems
OFF : No individual
error information
present
ON : Individual error
information
present
• This relay turns on when there is error individual
information for an error occurred in the CPU
module in the other system.
• The SM16 status for the CPU module in the
other system is reflected.
SM16
SM1649
Standby system
cancel error flag
OFF to ON:
Cancels error of
standby system
This relay is turned on from off to clear a
continuation error occurred in the standby system.
Use SD1649 to specify the error code of the error
to be canceled.
U-
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