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Appendix 3 SPECIAL RELAY LIST
(7) Instruction-Related Special Relays
*1: The module whose first 5 digits of serial No. is "09042" or later.
*2: The relevant modules are as follows:
• The Universal model QCPU whose serial number (first five digits) is "10102" or later.
• Q00UJCPU, Q00UCPU, Q01UCPU
*3: The relevant modules are as follows:
• The Universal model QCPU whose serial number (first five digits) is "10102" or later.
• Q00UCPU, Q01UCPU
TableApp.3.8 Special relay
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM700 Carry flag
OFF : Carry OFF
ON : Carry ON
• Carry flag used in application instruction
S (Instruction
execution)
M9012 QCPU
SM701
Number of output
characters selection
Switching the number of
output characters and the
output pattern
• Used for the PR, PRC, BINDA, DBINDA, BINHA,
DBINHA, BCDDA, DBCDDA, or COMRD instruction
U M9049
Qn(H)
QnPH
QnPRH
QnU
SM702 Search method
OFF : Search next
ON : 2-part search
• Designates method to be used by search instruction.
• Data must be arranged for 2-part search.
UNew
QCPUSM703 Sort order
OFF : Ascending order
ON : Descending order
• The sort instruction is used to designate whether
data should be sorted in ascending order or in
descending order.
UNew
SM704 Block comparison
OFF : Non-match found
ON : All match
• Goes ON when all data conditions have been met for
the BKCMP instruction.
S (Instruction
execution)
New
• Goes ON when all data conditions have been met for
the DBKCMP instruction.
S (Instruction
execution)
New
QnU
*2
SM709
DT/TM instruction
improper data
detection flag
OFF : Improper data not
detected
ON : Improper data detected
Turns on when the data to be compared by the DT or
TM instruction is not recognized as date data or time
data, or the device (3 words) to be compared exceeds
the specified device range.
S (Instruction
execution) or U
New
SM710
CHK instruction
priority ranking flag
OFF : Conditions priority
ON : Pattern priority
• Remains as originally set when OFF.
• CHK priorities updated when ON.
S (Instruction
execution)
New
Qn(H)
QnPH
QnPRH
SM715 EI flag
OFF : During DI
ON : During EI
• ON when EI instruction is being executed.
S (Instruction
execution)
New QCPU
SM716
Block comparison
(Except an interrupt
program)
OFF : Mismatch found
ON : No mismatch
Turns on when all data conditions are confirmed that
they are met by the DBKCMP instruction.
(Initial execution type program, scan execution type
program, stand-by type program executed from initial
execution type program or scan execution type
program)
S (Instruction
execution)
New
QnU
*2
SM717
Block comparison
(Interrupt program)
OFF : Mismatch found
ON : No mismatch
Turns on when all data conditions are confirmed that
they are met by the DBKCMP instruction.
(Interrupt program, fixed scan execution type program,
stand-by type program executed from interrupt program
or fixed scan execution type program)
SM718
Block comparison
(Interrupt program
(I45))
OFF : Mismatch found
ON : No mismatch
Turns on when all data conditions are confirmed that
they are met by the DBKCMP instruction.
(Interrupt program (I45) or Stand-by type program
executed from interrupt program (I45))
QnU
*3
SM720
Comment read
completion flag
OFF : Comment read not
completed
ON : Comment read
completed
• Turns on only during one scan when the processing
of the COMRD or PRC instruction is completed.
S (Status change) New
Qn(H)
QnPH
• Turns on only during one scan when the processing
of the COMRD instruction is completed.
QnPRH
QnU
SM721 File being accessed
OFF : File not accessed
ON : File being accessed
• Switches ON while a file is being accessed by the
SP. FWRITE, SP. FREAD, COMRD, PRC, or LEDC
instruction.
S (Status change) New
Qn(H)
QnPH
• Switches ON while a file is being accessed by the
SP. FWRITE, SP. FREAD, COMRD or LEDC instruc-
tion.
Qn(H)
QnPH
QnPRH
• Switches ON while a file is being accessed by the
SP. FWRITE, SP. FREAD, COMRD or SP.DEVST
instruction.
QnU
• Turns ON while the ATA card or standard ROM is
being accessed.
QnU
*1
SM722
BIN/DBIN instruction
error disabling flag
OFF : Error detection
performed
ON : Error detection not
performed
• Turned ON when "OPERATION ERROR" is
suppressed for BIN or DBIN instruction.
UNewQCPU