3 Comparison of Specifications
3.1 Comparison of Performance Specifications
A - 13
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
FX
3S
/FX
3G
/FX
3GC
/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. Can only be connected to the FX3U PLC. Up to 2 adapters can be connected.
*2. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*3. 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 PLC (14-point and
24-point type) and FX
3S/
FX
3GC PLC (Main unit,
transistor output)
FX3G PLC (40-point and
60-point type) and FX
3U/
FX
3UC PLC (Main unit,
transistor output)
FX3U-2HSY-ADP
*1
Number of control axes 2 independent axes
3 independent axes
2
independent axes
(Connect 2 adapters to the main
unit to control 4 axes
independently.)
Interpolation -
Pulse output
form
Transistor Differential line driver
Pulse output method "Pulse train + direction" method
"Pulse train + direction" method
"Forward/reverse rotation pulse
train" method
Maximum
frequency
*2
100,000Hz 200,000Hz
Acceleration
/deceleration type
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 current
value of ABS.)
ABS instruction of the PLC
Others
Pulses can be output from
the general-purpose
outputs (Y000 and Y001) of
the main unit.
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 is connected.
• To be used when positioning
control is performed with a
FX
3U Series relay output type
or triac output type main unit.
• Used in place of the general-
purpose outputs (Y000 to
Y007)
*3
of the main unit.
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