Mitsubishi MELSEC-A series Programming Manual

4. INSTRUCTION FORMAT
4 − 1
MELSEC-A
4. INSTRUCTION FORMAT
The explanations of instructions given in the following sections use the format
described in this section.
Available Device
Bit device Word (16-bit) device Constant Pointer Level
X Y M L S B F T C D W R A0 A1 Z V K H P I N
M9012 (M9010, M9011)
(D) O O O O O
n O O
O O
*1: For the number of steps when A ACPU is used, refer to Section 3.8.1
*2: Subset processing can be used with A3HCPU, A3MCPU and A ACPU only
A1S An
AnN
AnN-F
A3H
A3M
A3V
AnA
AnA-F
AnU A0J2H A2C A73
A3N
board
Applicable
CPU
O O O O O O O O O X O
Remark
7.3.3 n-word data 1-word right shift, leftshif
t
(DSFR, DSFRP, DSFL, DSFLP)
(D)
Head number of device
which stores data to be
shifted
n Number of shifts
Setting data
DSFR, DSFL
Indicates the instruction s
y
mbol.
Shift commands
(D)
n
(D) n
P
Digit specification
Functions DSFR
(1) Shifts the word devices of "n" points, which be
g
in with the device specified at D,
to the right by one bit.
(2) The highest bit changes to 0.
(3) For T/C, the present value (count value) is shifted. (The shift of set value cannot be
performed.)
DSFL
(1) Shifts the word devices of "n" points, which be
g
in with the device specified at (D), to
the left by one bit.
(2) The lowest bit changes to 0.
(3) In regards to T/C, the present value (count value) is shifted.
(The shift of set value cannot be performed.)
Execution Conditions
OFF
ON
Executed
per scan
Executed
only once
P
Shift commands
Executed
per scan
Executed
only once
Operation Error In the following case, operation error occurs and the error fla
g
turns on.
"n" is a negative value.
2)
3)
1)
4)
9)
10)
11)
12)
13)
8)
7)
6) 5)
Before execution
After execution
Shift ran
g
e
(
n
p
oints
)
0 is entered.
Before execution
After execution
Shift ran
g
e
(
n
p
oints
)
0 is
entered.
Index
Carry fla
g
Error flag

Mitsubishi MELSEC-A series Specifications

General

Brand	Mitsubishi
Model	MELSEC-A series
Category	Controller
Language	English