Mitsubishi Electronics FX3G User Manual
551
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
20 Positioning Control – FNC150 to FNC159
20.2 FNC151 – DVIT / Interrupt Positioning
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
S2 : When using a special high-speed output adapter for the pulse output destination in an FX
3U
PLC, the rotation
direction signal must be used by the following table output.
When using a built-in transistor output for the pulse output destination in an FX
When using a built-in transistor output for the pulse output destination in an FX
3U
/FX
3UC
PLC, the rotation
direction signal must use transistor output.
S3 : "D .b" cannot be indexed with index registers (V and Z).
Explanation of function and operation
Caution on writing during RUN
During RUN, avoid writing while the DVIT (FNC151) instruction is executed (that is, while a pulse is output).
Note that if writing is executed during RUN to a circuit block including the FNC151 instruction while pulses are output,
the PLC decelerates and stops pulse output.
Note that if writing is executed during RUN to a circuit block including the FNC151 instruction while pulses are output,
the PLC decelerates and stops pulse output.
Function change depending on the version
The functions of FNC151 instruction are changed depending on the version as shown in the table below.
→ For explanation of the instruction and the contents of function change,
refer to the Positioning Control Edition.
Special high-speed output adapter No.
Pulse output
Rotation direction output
No. 1 (1st unit)
=Y000
=Y004
=Y001
=Y005
No. 2 (2nd unit)
=Y002
=Y006
=Y003
=Y007
Applicable version
Item
Outline of function
FX
3U
FX
3UC
Ver. 2.20 or later Ver. 1.30 or later
Interrupt input signal
specification function
specification function
When M8336 is set to ON, the interrupt input signal corresponding to Y000
to Y003 is changed to an input number (X000 to X007) specified by D8336.
When using a transistor output in the main unit, Y003 cannot be specified.
to Y003 is changed to an input number (X000 to X007) specified by D8336.
When using a transistor output in the main unit, Y003 cannot be specified.
Ver. 2.20 or later Ver. 2.20 or later User interrupt mode
When "8" is specified by D8336 to the interrupt input signal corresponding
to Y000 to Y003 and M8336 is set to ON, the interrupt input signal is
changed to a special auxiliary relay. When this changed special auxiliary
relay is set to from OFF to ON in an input interrupt program, the PLC starts
the interrupt operation. When this function is used, however, the logic of
the interrupt input cannot be inverted.
In addition, when using a transistor output in the main unit, Y003 cannot be
specified.
to Y000 to Y003 and M8336 is set to ON, the interrupt input signal is
changed to a special auxiliary relay. When this changed special auxiliary
relay is set to from OFF to ON in an input interrupt program, the PLC starts
the interrupt operation. When this function is used, however, the logic of
the interrupt input cannot be inverted.
In addition, when using a transistor output in the main unit, Y003 cannot be
specified.
D
1
D
2
D
1
D
2
D
1
D
2
D
1
D
2
Command
input
FNC151
DVIT
S
2
S
1
D
1
D
2