16 Input/Output Extension Blocks
249
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
11
High-Speed
Counters
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Input/Output
Powered
Extension Units
16
Input/Output
Extension
Blocks
17
Extension
Power Supply
Unit
18
Other Extension
Units and
Options
19
Display Module
20
Terminal Block
16.1 Outline
16.1 Outline
Connect input/output extension blocks to the PLC to add more input/output points. 8 or 16 points can be
added by an input/output extension block.
Since the power is supplied from the main unit, it is not necessary to prepare another power supply unit for
each input/output extension block.
16.1.1 Product configuration
There are various types of input/output extension blocks. Select optimum blocks considering the input type,
output type, and connection unit of your system.
16.1.2 Product list
1. For input/output extension
:Sink [-common], :Source [+common]
*1. Four inputs and four outputs are occupied as unused numbers.
2. For input extension
:Sink [-common], :Source [+common]
Model
Input Output
Connection
type
Type
Number
of points
Common
system
Type
Number
of points
Common
system
Common to both sink and source inputs
FX2N-8ER-ES/UL 24V DC
4(8)
*1
Relay
4(8)
*1
- Terminal block
Dedicated to sink input only
FX2N-8ER 24V DC
4(8)
*1
Relay
4(8)
*1
- Terminal block
Model
Input Output
Connection
type
Type
Number
of points
Common
system
Type
Number
of points
Common
system
Common to both sink and source inputs
FX2N-8EX-ES/UL 24V DC 8 - - - Terminal block
FX2N-16EX-ES/UL 24V DC 16 - - - Terminal block
Dedicated to sink input only
FX2N-8EX 24V DC 8 - - - Terminal block
FX2N-16EX 24V DC 16 - - - Terminal block
FX2N-16EX-C 24V DC 16 - - - Connector
FX
2N-16EXL-C 5V DC 16 - - - Connector
100V AC input type
FX
2N-8EX-UA1/UL 100V AC 8 - - - - Terminal block
Input/output extension blocks
Input type
24V DC
(Sink, source)
Power supply
Power supply to
inside of PLC
Number of points
8
24V DC
(Sink)
100V AC system
5V DC
Connection unit
Terminal block
Connector
Output type
Relay
Triac
Transistor
(Source)
Transistor
(Sink)
16
Sink Source
Sink
Sink Source
Sink
Sink
Sink