3 Comparison of Specifications
3.2 Comparison of Operation Modes
A - 17
FX
3G
/FX
3U
/FX
3UC
 PLC User's Manual - Positioning Control Edition
Common Items
A
Common Items
B
Built-in 
Positioning 
Functions
Apx.
Example 
Connection
Interrupt stop 
(linear interpolation [Interrupt 
stop])
If an interrupt input turns ON, 
during a linear interpolation 
operation to the target posi-
tion (x, y) at a vector speed, 
the speed will decelerate and 
the positioning operation will 
stop.
− −−−33
Interrupt stop
If an interrupt input turns ON, 
during a positioning opera-
tion, the speed will deceler-
ate and the operation will 
stop.
−−33− 3
Interrupt 1-speed positioning
(Interrupt 1-speed constant 
quantity feed) 
If an interrupt input turns ON, 
the workpiece will travel to 
the specified transfer dis-
tance at the same speed, 
where it will decelerate and 
the operation will stop.
3
*6
3333 3
2-speed positioning with 
speed reduction
The operation starts at oper-
ation speed (1) by the start 
command. During the opera-
tion, if the speed reduction 
command is input, the speed 
will decelerate to operation 
speed (2). After that, the 
operation will be continued at 
operation speed (2) until the 
stop command is input.
− 3 −−− −
Interrupt 2-speed positioning 
(Interrupt 2-speed constant 
quantity feed)
If interrupt input(1) turns ON, 
the speed will be reduced to 
the 2nd speed. After that, if 
interrupt input(2) turns ON, 
the operation will decelerate 
to stop after moving the 
specified transfer distance at 
the 2nd speed.
−−333 3
*6. Interrupt positioning instruction performs this operation.
Only available for FX
3U and FX3UC PLCs.
Positioning operation
pattern
Description
Built-in positioning function
FX
3G
/FX
3U
/FX
3UC
 PLC 
(main unit)
(Transistor output)
FX3U-2HSY-ADP(FX3U)
FX2N-1PG(-E)
FX2N-10PG
FX2N-10GM
FX2N-20GM
FX3U-20SSC-H
Start point
X-axis
Interrupt input
Y-axis
Target 
position
(x, y)
Ignoring 
remaining
distance
Speed
Speed Interrupt
input
Target
position
Operation speed
Speed
Start
Operation speed
Interruption command
Transfer distance
Speed
Start
Speed reduction
command
Stop
command
Operation
speed(1)
Operation
speed(2)
Speed
Start
1st speed
Interrupt
input(1)
Interrupt
input(2)
2nd speed
Transfer
distance