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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
: First five digits of serial No. are 04122 or later.
High Performance
Basic
QCPU
PLC CPU Process
CPU
Applicable
CPU
Redundant
CPU
Universal
4.4.4 Active step batch readout instructions (MOV, DMOV)
Usable Devices Programs Using Instructions Execution Site
Internal Device
(System, User)
Link Direct
J
\
SFC Program
Bit Word
File
Register
R
Bit Word
Intelligent
Function
Module
U
\G
Index
Z
Constant
K, H
Expansion
SFC
BLm\Sn
Other
Data
Type
Sequence
Program
Step
Transition
Condition
Block Step
Transition
Condition
S
D
BIN16/
BIN32
: Only step relay (S) can be used
[When step in current block is specified] [When step in another block is specified]
[When step is specified in sequence program]
n is a step No.
MOV(P)
S
D
DMOV(P)
S
D
m is a block No. and n is a step No.
MOV(P)
S
D
DMOV(P)
S
D
(K4Sn)
(K8Sn)
(BLm\K4Sn)
(BLm\K8Sn)
[Function]
(1) Executes a batch readout of the operation statuses (active/inactive) of steps in a specified
block.
(2) The readout results are stored at the “
D
” device as shown below.
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
0/10/10/10/10/10/10/10/10/1
0/1 0/1 0/1 0/1 0/1 0/1 0/1
Step designated at Sn
Step S(n+1)
Step S(n+15)
0: Step in question is inactive
1: Step in question is active
(3) The bit corresponding to the unassigned step No. (nonexistent step No.) in the read data turns
to "0".
When step 5 and step 8 do not exist in the read block, b5 and b8 turn to "0".
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
S15 S14 S13 S12 S11 S10 S9
None
S7 S6 S4 S3 S2 S1 S0
D
None
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
00
Corresponding
step No.
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