Mitsubishi Electronics FX3G User Manual
553
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.4 FNC155 – ABS / Absolute Current Value Read
11
FN
C30
-FN
C3
C30
-FN
C3
9
R
ota
tion and
Shi
ft
ft
12
FN
C40-FN
C40-FN
C49
D
ata O
perati
perati
on
13
FNC
50-FNC
59
High-Speed
Proc
essing
14
FM
C60-FN
C60-FN
C69
H
andy
In
struction
15
FN
C70-FN
C70-FN
C79
E
xternal
F
X
I/O
De
vice
16
FNC
80-FNC
89
External
FX
Dev
ice
ice
17
FNC1
00-
FNC10
00-
FNC10
9
Dat
a
a
Transfer 2
18
FNC1
10-
FNC139
FNC139
Fl
oati
ng Poi
nt
19
FNC14
0-F
N
C
149
Da
ta
Operation 2
20
FNC1
50-
FNC159
FNC159
Pos
itioning
itioning
Control
20.4
FNC155 – ABS / Absolute Current Value Read
Outline
This instruction reads the absolute position (ABS) data when the servo amplifier (equipped with the absolute position
detection function) MR-J4 A, MR-J3 A, MR-J2(S) A, or MR-H A is connected. The data is converted into a pulse
when being read.
detection function) MR-J4 A, MR-J3 A, MR-J2(S) A, or MR-H A 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
S1: Specify a transistor output.
S2: "D .b" is available only in FX
S2: "D .b" is available only in FX
3U
and FX
3UC
PLCs. However, index modifiers (V and Z) are not available.
S3: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S4: This function is supported only in FX
3U
/FX
3UC
PLCs.
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
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
S2
S
1
S2
S3
S4
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