6 Examination of System Configuration
6.1 Configuration of a Whole System
53
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
1
Introduction
2
Features and 
Part Names
3
Product
Introduction
4
Specifications
5
Version and 
Peripheral 
Devices
6
System 
Configuration
7
Input/Output 
Nos., Unit Nos.
8
Installation
9
Preparation and 
Power Supply 
Wiring
10
Input Wiring
6. Examination of System Configuration
6.1 Configuration of a Whole System
The configuration of a whole system is shown below as an example.
Special
function block
FX2N input/output powered
extension unit
Extension power supply unit
Unit No.0
*2
*1
Extension devices for FX2N/FX3U Series
Main unit
Extension devices for 
FX
2N/FX3U Series
Range of devices powered from
main unit
Expansion board
*1 The connector conversion adapter is required to use a special adapter.
*2 Included in the number of units connectable to the main unit when the input extension block 
    (including the FX
2N-8ER-ES/UL and FX2N-8ER) is used and the extension power supply unit is located 
    on the upstream side.
6
FX Series terminal block
Configuration of whole system
4
Determination of number of devices to be connected to extension unit/
extension power supply unit
3
Selection of extension cable
Memory cassette
Special
adapters
Input extension
block
Output
extension block
Input extension
block
Connector conversion 
adapter 
FX3G-40MT/ES
X000 to X027
FX
2N-32ER-ES/UL
X050 to X067
FX2N-16EX-C FX2N-16CCL-M
X070 to X107
Y040 to Y057
FX
2N-16EX
X030 to X047
Y020 to Y037
FX2N-16EYT
-
Y000 to Y017
The range of devices powered from
the FX
2N input/output powered
extension unit or the extension
power supply unit
5
When CC-Link is used
Refer to Chapter 19.
Refer to this chapter.
Display module
1
Expansion board/Special adapters/Memory cassette
Display module/Connector conversion adapter
2
Determination of number of 
extension devices to be connected 
to main unit