Block Stop And Restart Instructions (Pause, Rstart) - Mitsubishi Q series Programming Manual

4 SFC PROGRAM CONFIGURATION

4.4.7 Block STOP and RESTART instructions (PAUSE, RSTART)

Internal Device
File
(System, User)
Register
R
Bit Word
D
PAUSE
[Function]
(1) Block STOP instruction (PAUSE)
(a) Executes a temporary stop at the specified block.
(b) As shown below, processing varies, depending on when the stop occurs and on the coil
output status setting (designated by OUT instruction).
Setting of Operation
Status of
Output Mode at Output at
STOP-time
Block Stop in Block Stop
Mode Bit
PLC Parameter (SM325)
OFF or no
setting
(immediate
• Turns OFF
stop)
• OFF
(coil output
OFF) (coil
• Remains ON
output
ON
(coil output OFF)
(STOP after
held)
transition)
OFF or no
setting
(immediate
stop)
• ON
• Remains ON
(coil
(coil output
output
held)
ON
held)
(STOP after
transition)
*: The held step indicates the step whose attribute has been set to the HOLD step (SC, SE, ST) and which is being held with the
transition condition satisfied.
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Usable Devices
Link Direct Intelligent
J \ Function Index
Z
Module
Bit Word
U \G
D (BLm)
m is a block No.
Active step other than held step
(including HOLD step whose transition condition
is not satisfied)
• Immediately after a STOP request is made,
the coil output of the operation output is turned
OFF and the block is stopped.
• The status remains active.
• Normal operation is performed until the
transition condition is satisfied.
• When the transition condition is satisfied, the
end processing of the corresponding step is
performed.
At the same time, the transition destination
step becomes active and the block is stopped
before execution of the operation output.
• Immediately after a STOP request is made,
the block is stopped with the coil output of the
operation output being held.
• The status remains active.
• Normal operation is performed until the
transition condition is satisfied.
• When the transition condition is satisfied, the
end processing of the corresponding step is
performed.
At the same time, the transition destination
step becomes active and the block is stopped
before execution of the operation output.
Applicable
CPU Basic
: First five digits of serial No. are 04122 or later.
Expansion
Data
Constant SFC Other
Type
K, H BLm
BLm\Sn
BLm\TRn
Device
name
Operation
Coil HOLD step (SC)
• Immediately after a
STOP request is
made, the coil
output of the
operation output is
turned OFF and the
block is stopped.
• The status
becomes inactive.
• Immediately after a STOP request is made, the block is stopped
with the coil output of the operation output being held.
• The status remains active.
QCPU
PLC CPU
Universal
High Performance
Programs Using Instructions
SFC Program
Sequence
Program
Transition
Step
Condition
PSTART D (BLm)
m is a block No.
Held step *
Operation HOLD
step (without
transition check) (SE)
• Immediately after a STOP request is
made, the coil output of the operation
output is turned OFF and the block is
stopped.
• The status remains active.
MELSEC-Q
Process Redundant
CPU CPU
Execution Site
Transition
Block Step
Condition
Operation HOLD
step (with transition
check) (ST)
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