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3 Comparison of Specifications
3.1 Comparison of Performance Specifications
A - 12
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Common Items
3. Comparison of Specifications
The specifications for each product with positioning functionality are shown below.
3.1 Comparison of Performance Specifications
3.1.1 Built-in Positioning Function [Main Unit (Transistor Output),
High-Speed Output Special Adapter (FX3U-2HSY-ADP)]
*1. 2 independent axes in 14-point and 24-point type FX3G PLC.
*2. Can only be connected to the FX3U PLC. Up to 2 adapters can be connected.
*3. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*4. If 2 adapters are connected, Y000 to Y007 will be used. If only one adapter is connected, Y000, Y001,
Y004, and Y005 will be used. The relation between the output of the FX
3U-2HSY-ADP and the output
of main unit is described in the following sections.
→ For high-speed output special adapters, refer to Subsection 1.5.3 and Section 4.9 of
"B. Built-in Positioning Function."
Model
FX3G/FX3U/FX3UC PLC
(Main unit, transistor output)
FX3U-2HSY-ADP
*2
Number of control
axes
3 independent axes
*1
2
independent axes
(Connect 2 adapters to the main unit to control
4 axes independently.)
Interpolation - -
Pulse output
system
Open collector system Differential line driver system
Pulse output
method
"Pulse train + direction" method
"Pulse train + direction" method
"Forward/reverse rotation pulse train" method
Maximum
frequency
*3
100,000Hz 200,000Hz
Acceleration
/deceleration type
Automatic trapezoidal acceleration/deceleration
Unit pulse
Positioning range -999,999 to +999,999 (pulse)
Program language Sequence program
Position data 1 point (set in sequence program)
Connection of
manual pulse
generator
--
Detection of
absolute position
(Reads out the cur-
rent value of ABS.)
ABS instruction of the PLC
Others
• Pulses can be output from the general-
purpose outputs (Y000, Y001, and Y002) of
the main unit.
• To be used when a servo amplifier with a
differential line receiver method is
connected.
• To be used when positioning control is
performed with a FX
3U Series relay output
type main unit.
• Used in place of the general-purpose
outputs (Y000 to Y007)
*4
of the main unit.