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1 Introduction
1.2 Introduction of Products Needed for Positioning
A - 4
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
To control the positioning operation, use the positioning functions incorporated in the main unit (including the
special adapters), and the special functions units/blocks. The functions, however, depend on the product(s)
being used. Select the optimum product(s) for the purpose of use.
1.2.1 List of Models
The products needed for positioning are shown in the following table:
1. Main unit (transistor output) and special adapter
*1. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*2. Can only be connected to the FX
3U PLC.
*3. "2-axes (independent)" in 14-point and 24-point type main units.
*4. Connection of 1 adapter can control 2 axes. Connection of 2 adapters can control up to 4 axes.
*5. The minimum frequency set by the PLSY instruction or PLSV instruction is "1 Hz".
→ For details on the PLSY instruction, refer to the programming manual.
Model
Number of
axes
Frequency
(Hz)
*1
Unit
Output
system
Output method Reference
Main unit (transistor output)
FX
3U/FX3UC
PLC
3-axes
(independent)
10
*5
to 100,000
pulse
Open
collector
system
"Pulse train + direction"
method
B. Built-in
Positioning
Function
FX
3G PLC
3-axes
*3
(independent)
10
*5
to 100,000
pulse
Open
collector
system
"Pulse train + direction"
method
B. Built-in
Positioning
Function
Special adapter
FX
3U-2HSY
-ADP
*2
2-axes
*4
(independent)
10
*5
to 200,000
pulse
Differential
line driver
system
"Pulse train + direction"
method or "forward/
reverse rotation pulse
train" method
B. Built-in
Positioning
Function