531
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.4 FNC155 – ABS / Absolute Current Value Read
11
FN
C30-
FN
C39
R
o
ta
tion and
Sh
ift
12
FNC
4
0
-FNC49
D
a
ta
Op
e
ra
tio
n
13
FNC5
0
-FNC5
9
H
igh Speed
Pr
ocessi
ng
14
FM
C6
0
-F
NC6
9
H
and
y
In
st
ru
cti
o
n
15
FNC7
0
-FNC7
9
Ex
te
rn
a
l F
X
I
/O
D
evi
ce
16
FNC8
0
-FNC8
9
Ext
e
rnal
FX
D
evi
ce
17
F
N
C1
00
-F
NC
10
9
Da
ta
Tr
ansf
e
r 2
18
FN
C
110-FN
C
13
9
Fl
oat
ing P
o
in
t
19
FN
C
140-FN
C
149
Da
ta
O
per
at
io
n
2
20
FN
C
15
0-F
N
C
159
P
o
si
tioni
ng
C
ont
ro
l
20.4
FNC155 – ABS / Absolute Current Value Read
Outline
This instruction reads the absolute position (ABS) data when the Mitsubishi servo amplifier (equipped with the
absolute position detection function) MR-H, MR-J2(S), or MR-J3 is connected. The data is converted into a
pulse when being read.
→
For explanation of the instruction, refer to the Positioning Control Edition.
1. Instruction format
2. Set data
3. Applicable devices
S
1: Specify a transistor output.
S
2: "D
.b" cannot be indexed with index registers (V and Z).
Explanation of function and operation
Operand type
Description
Data type
Head device number inputting absolute (ABS) data output signal sent from servo
amplifier
Three points are occupied from
.
Bit
Head device number outputting absolute (ABS) data control signal to servo
amplifier
Three points are occupied from
.
Device number storing absolute (ABS) data (32-bit value)
32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3 3 3
3
S
2
3
S
1
3
3
S
2
3
3
3
3
3 3 3 3
3
3 3
3
FNC 155
ABS
D
DABS
32-bit Instruction
13 steps
Mnemonic
Operation Condition
Continuous
Operation
−
16-bit Instruction
Mnemonic
Operation Condition
S
S
D
1
D
1
D
2
S
D
1
D
2
Command
input
FNC155
DABS
S
D
1
D
2