Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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APPX
Appendix 4 List of Special Relay Areas
Drive information
The following is the list of special relay areas relating to the drive information.
No. Name Data stored Details Set by (setting timing) CPU
SM600 Memory card usable flags Off: Disabled
On: Enabled This relay is on when an SD memory card is
enabled (This relay switches to on when a
valid SD memory card is inserted and
prepared for use). S (Status change) ALL
*2
SM601 Memory card protect flag Off: Not protected
On: Protected This relay is on when the write protect
switch of the SD memory card is set to on. S (Status change) ALL
*2
SM603 Memory card (drive 2) flag Off: No SD memory card
inserted
On: SD memory card
inserted
This relay is on when an SD memory card is
inserted. (This relay switches to on when an
SD memory card is inserted regardless of its
state (enabled/disabled) and type). S (Status change) ALL
*2
SM604 Memory card in-use flag Off: Not used
On: In use This relay is on when the SD memory card
is being used. S (Status change) ALL
*2
SM605 Memory card remove/insert
prohibit flag Off: Allowed to remove/
insert
On: Not allowed to
remove/insert
Turn on this relay to prohibit the SD memory
card from being removed/inserted. When
this relay is on, if SM607 is set to on, the
system switches it to off. U/S ALL
*2
SM606 SD memory card forced
disable instruction Off: Cancel instruction
On: Forced disable
instruction
• This relay can be switched to on to issue
the instruction that forces the SD memory
card to be disabled. However, whenever
any function accesses the SD memory
card, the disabling process does not start
until the access is completed.
• This relay can be switched to off to cancel
the instruction that forces the SD memory
card to be disabled.
U/S (Status change) ALL
*2
SM607 SD memory card forced
disable status flag Off: Not disabled
On: Disabled • This relay switches to on when the SD
memory card is disabled by switching
SM606 to on.
• This relay switches to off when the
forcibly-disabled SD memory card is
enabled by switching SM606 to off.
S (Status change) ALL
*2
SM624 Battery-less option cassette
insertion flag Off: Not inserted
On: Inserted This relay is on when the battery-less option
cassette is inserted. S (Status change) Rn
*4
SM625 Battery-less function
execution flag Off: Battery-less function
not executed
On: Battery-less function
executed
This relay is on while the battery-less
function is being executed. S (Status change) Rn
*4
SM626 Extended SRAM cassette
insertion flag Off: Not inserted
On: Inserted This relay is on when the extended SRAM
cassette is inserted. S (Status change) ALL
*3
SM628 Program memory write
error Off: No write operation/
normal
On: Write error
This relay switches to on when a write error
is detected during write operation to the
program memory. This relay switches to off
when the write instruction is issued. S (Writing) ALL
SM629 Program memory write flag Off: No write operation
On: Executing write
operation
This relay is on when the write process to
the program memory is in progress. The
relay is switched to off when the write
process is completed. S (Writing) ALL
SM630 Program memory overwrite
count error flag Off: The number of rewrite
operations is less than
100000
On: The number of rewrite
operations reaches
100000
This relay switches to on when the number
of program memory rewriting operations
reaches 100000 (CPU module must be
replaced). S (Writing) ALL
SM632 Data memory write error Off: No write operation/
normal
On: Write error
This relay switches to on when a write error
is detected during write operation to the
data memory. This relay switches to off
when the write instruction is issued. S (Writing) ALL
SM633 Data memory write flag Off: No write operation
On: Executing write
operation
This relay is on when the write process to
the data memory is in progress. The relay is
switched to off when the write process is
completed. S (Writing) ALL