1 Outline
1.1 Features
B - 3
FX
3G
/FX
3U
/FX
3UC
 PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
A
Common Items
B
Built-in 
Positioning 
Functions
Apx.
Example 
Connection
1. Outline
This chapter describes a general outline of the positioning modules.  Note that the general outputs of the 
FX
3G/FX3U/FX3UC PLC (transistor output) and FX3U-2HSY-ADP high-speed output special adapter are 
needed for positioning control.
1.1 Features
1) The general outputs of the FX3G/FX3U/FX3UC PLC (transistor output) can control up to 3 axes
*1
 for 
positioning operations.
2) If one high-speed output special adapter (FX
3U-2HSY-ADP) is connected, the adapter can control up to 2 
axes for the positioning operation.  If two high-speed output special adapters are connected, the adapters 
can control up to 4 axes for the positioning operation.
3) The FX
3G/FX3U/FX3UC PLC positioning instructions (applied instructions) are used for positioning control.
4) The general outputs of the FX
3G/FX3U/FX3UC PLC (transistor output) can output a pulse train of 100 kHz 
(open collector system).
5) The FX
3U-2HSY-ADP high-speed output special adapter can output a pulse train of 200 kHz (differential 
line driver system).
6) The FX
3U-2HSY-ADP high-speed output special adapter can switch the output method between "pulse 
train + direction" method and "forward/reverse rotation pulse train" method.
System
...
For a detailed description of
the input/output specifications,
refer to Section 2.4 and
Section 2.5.
...
To check the PLC model,
refer to Section 1.3.
Points and references
...
1-axis 2-axes 3-axes
FX
3U
/FX
3UC
 PLC
(transistor output)
• If the general outputs of the FX
3G/FX3U
/FX
3UC 
PLC are used:
3 axes  , maximum
...
Number of controllable axes
For examples of connection,
refer to the Appendix.
...
For a detailed description of
the positioning instructions,
refer to Chapters 6 to 11.
• If FX
3U
-2HSY-ADP adapters are connected to the FX
3U
 PLC:
...
For a detailed description of the
input/output specifications, refe
to Section 2.4 and Section 2.5.
...
To check the PLC model,
refer to Section 1.3.
...
1-axis 2-axes 3-axes
FX
3U
 PLC
4 axes, maximum
For examples of connection,
refer to the Appendix.
...
For a detailed description of the
positioning instructions, refer to
Chapters 6 to 11.
4-axes
FX
3U
-2HSY
-ADP
...
Number of controllable axes
Servo amplifier (drive unit)etc.
Servo amplifier (drive unit)etc.
2nd 1st
FX
3G
/
*1
*1. 2 independent axes in 14-point and 24-point type FX
3G
 PLC.