Block Switching Instruction (Brset) - Mitsubishi Q series Programming Manual

4 SFC PROGRAM CONFIGURATION

4.4.11 Block switching instruction (BRSET)

Internal Device
File
(System, User)
Register
R
Bit Word
S
BRSET S
[Function]
(1) Switches the target block number of the SFC control instruction that specifies only a step (Sn)
and transition condition (TRn) to the number set for the device designated by
(2) Although "BLm\Sn" or "BLm/TRn" may be used as the instruction device when designating the
destination block number, only a constant (K, H) may be designated at the "m" of "BLm",
thereby fixing the designation destination.
When block switching is executed by this BRSET instruction, a word device can be used for
indirect designation, index modification, etc.
(3) The effective operation range when block switching occurs (by BRSET instruction) varies
according to the program being run at the time, as shown below.
1) When this instruction is executed in a sequence program, target block switching is valid
from instruction execution to SFC execution.
At the next scan, the target block is block 0 as the default until the instruction is executed
again.
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Usable Devices
Link Direct Intelligent
J \ Function Index
Module Z
Bit Word
U \G
Applicable
Basic
CPU
Data
Expansion
Type
Constant Other
SFC
BIN16
QCPU
PLC CPU
Universal
High Performance
Programs Using Instructions
SFC Program
Sequence
Program
Transition
Step
Condition
MELSEC-Q
Process Redundant
CPU CPU
Execution Site
Transition
Block Step
Condition
S
.
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