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App-126
*1: This applies to the CPU of function version B or later.
*3: The module whose first 5 digits of serial No. is "04122" or later.
*4: The module whose first 5 digits of serial No. is "07032" or later.
TableApp.3.3 Special relay
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM322
SFC program start
status
OFF : Initial start
ON : Resume start
• The SFC program starting mode in the SFC setting
of the PLC parameter dialog box is set as the initial
value.
AT initial start: OFF
At continued start: ON
S (Initial)/U
M9102form
at change
Q00J/Q00/Q01
*1
Qn(H)
QnPH
QnPRH
QnU
SM323
Presence/absence of
continuous transition
for entire block
OFF : Continuous transition
not effective
ON : Continuous transition
effective
Set the presence/absence of continuous transition for
the block where "Continuous transition bit" of the SFC
data device has not been set.
U M9103
SM324
Continuous transition
prevention flag
OFF : When transition is
executed
ON : When no transition
• OFF during operation in the continuous transition
mode or during continuous transition, and ON when
continuous transition is not executed.
• Always ON during operation in the no continuous
transition mode.
S (Instruction
execution)
M9104
S (Status change) New
SM325
Output mode at block
stop
OFF : OFF
ON : Preserves
Select whether the coil outputs of the active steps are
held or not at the time of a block stop.
• As the initial value, the output mode at a block stop in
the parameter is OFF when the coil outputs are OFF,
and ON when the coil outputs are held.
• All coil outputs go OFF when this relay is OFF.
• Coil outputs are preserved when this relay is ON.
S (Initial)/U M9196
SM326
SFC device clear
mode
OFF : Clear device
ON : Preserves device
Selects the device status when the stopped CPU is run
after the sequence program or SFC program has been
modified when the SFC program exists.
UNew
SM327
Output during end step
execution
OFF : Hold step output
turned OFF (cleared)
ON : Hold step output held
Select the device status at the time of switching from
STOP to program write to RUN.(All devices except the
step relay)
S (Initial)/U
New
Qn(H)
QnPH
QnPRH
QnU
U
Q00J/Q00/Q01
*1
SM328
Clear processing
mode when end step
is reached
OFF : Clear processing is
performed.
ON : Clear processing is not
performed.
Select whether clear processing will be performed or
not if active steps other than the ones being held exist
in the block when the end step is reached.?
• When this relay turns OFF, all active steps are
forcibly terminated to terminate the block.
• When this relay is ON, the execution of the block is
continued as-is.
• If active steps other than the ones being held do not
exist when the end step is reached, the steps being
held are terminated to terminate the block.
UNew
Q00J/Q00/Q01
*1
QnU
SM330
Operation mode for
low speed execution
type program
OFF : Asynchronous mode
ON : Synchronous mode
Select whether the low speed execution type program
will be executed in the asynchronous mode or in the
synchronous mode.
• Asynchronous mode (this relay is turned OFF.)
Mode in which the operation of the low speed
execution type program is performed continuously
within the excess time.
• Synchronous mode (this relay is turned ON.)
Mode in which the operation of the low speed
execution type program is not performed
continuously and operation is performed from the
next scan if there is excess time.
UNew
Qn(H)
QnPH
SM331
Normal SFC program
execution status
OFF : Not executed
ON : Being executed
• Indicates whether the normal SFC program is being
executed or not.
• Used as an SFC control instruction execution
interlock.
S (Status change) New
Qn(H)
*3
QnPH
*4
QnPRH
SM332
Program execution
management SFC
program execution
status
OFF : Not executed
ON : Being executed
• Indicates whether the program execution
management SFC program is being executed or not.
• Used as an SFC control instruction execution
interlock.
SM390 Access execution flag
ON indicates completion of
intelligent function module
access
• The status of the intelligent function module access
instruction executed immediately before is stored.
(This data is overwritten when the intelligent function
module access instruction is executed again.)
• Used by the user in a program as a completion bit.
S (Status change) New
Qn(H)
QnPH
QnPRH
SM391
GINT instruction
execution completion
flag
OFF : Not executed
ON : Execution completed
Indicates execution status of the S(P).GINT instruction.
• Turned OFF before the instruction is executed.
• Turned ON after the instruction is completed.
S (Instruction
execution)
New QnU