Mitsubishi MELSEC Q Series - Page 1187

App-179
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Appendix3 SPECIAL RELAY LIST
*1 The information of the host CPU module is stored.
SM1593
Setting to access
extension base
unit of standby
system CPU
OFF : Error
ON : Ignored
This relay sets the behavior of the system
after the stanby CPU in the separate mode
accessed the buffer memory of an intelligent
function module mounted on an extension
base unit.
• OFF: "OPERATION ERROR" (error code:
4112) is returned.
• ON: No processing
U
New QnPRH
SM1595
Memory copy to
other system start
flag
OFF : Start memory
copy
ON : No memory copy
initiated
When SM1595 is turned on from off,
memory copying from the control system to
the standby system starts. Note that
memory copy does not start even after
SM1595 was turned on from off if the I/O
No. of the copy destination (standby system
CPU module: 3D1
H
) is not stored in
SD1595.
SM1596
Memory copy to
other system
status flag
OFF : Memory copy not
executed
ON : Memory copy
executed
• This relay is on during memory copy from
the control system to the standby system.
• This relay turns off when memory copy is
complete.
S (Starting to
copy/finish)
SM1597
Memory copy to
other system
completion flag
OFF : Memory copy not
completed
ON : Memory copy
completed
• This relay turns upon completion of
memory copy from the control system to
the standby system.
S (finish)/U
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
Number
Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU