Mitsubishi Electric MELSEC iQ-R Series - Drive Information

APPX
Appendix 4 List of Special Relay Areas
655
A
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)
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)
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)
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)
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)
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
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)
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)
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)
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)
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)
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)
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)
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)
SM634 Number of rewriting
operations error to data
memory 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 data
me
mo
ry rewriting operations reaches 100000 (CPU
module must be replaced).
S (Writing)