1 Introduction
1.2 Introduction of Products Needed for Positioning
A - 7
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
Cautions when connecting special adapters
• To use high-speed input/output special adapters only (not to use the other special adapters), it is not
necessary to connect the expansion board.
• To use the analog and communication special adapters, be sure to connect the expansion board.
• To use high-speed input/output special adapters together with the analog and/or communication special
adapters, connect the high-speed output special adapters to the expansion board (already connected to
the FX
3U PLC) first, and then connect the analog special adapters and/or the communication special
adapter(s).
1.2.4 Special Function Unit/Block
Connect a special function unit/block to the FX3U/FX3UC PLC to control positioning operations. Note that a
special function unit can individually control positioning operations.
1. System configuration for FX3U PLC
Up to 8 special function units/blocks can be connected to the FX3U PLC.
→ For details on system configuration, refer to the FX
3U Hardware Edition.
2. System configuration for FX3UC PLC
Up to 8
*1
special function units/blocks can be connected to the FX3UC PLC.
FX
2NC-CNV-IF or FX3UC-1PS-5V is needed to connect special function units/blocks.
*1. Up to 7 special function units/blocks can be connected to the FX
3UC-32MT-LT(-2) PLC.
*2. The unit/block number begins with "No. 1" when special function unit/blocks are connected to the
FX
3UC-32MT-LT(-2) PLC.
→ For details on system configuration, refer to the FX
3UC Hardware Edition.
RD
RDA
RDB
SDA
SDB
SG
SD
FX
3U
PLCExpansion board
High-speed output
special adapter
Analog special adapter
Communication special adapter
Special function block
Special function unit
No.0 No.7
to
Up to 8 units
FX
3U
PLC
POWE
R
ERRO
R
F
P
PG
O
R
P
f
B
f
A
STAR
T
CL
R
DO
G
X
1
X
0
FX
2N
-10PG
Servo motor
(Servo amplifier)
FX
3UC
PLC
FX
3UC
-1PS-5V
or
FX
2NC
-CNV-IF
Special function block
Special function unit
No.0 No.7
to
Up to 8 units
POWER
ERROR
FP
PGO
RP
f
B
f
A
START
CLR
DOG
X1
X0
FX
2N
-10PG
Servo motor
(Servo amplifier)
*2
