6 Examination of System Configuration
6.2 Rules of System Configuration
55
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
6.2 Rules of System Configuration
The system configuration must meet the following four requirements.
1 Number of input/output points
The total number of input and output points should be 256 or less in the whole system.
→ For details, refer to 6.3 Number of Input/Output Points and Maximum Number of Input/Output
Points.
2 Number of connected special extension devices
The figure below shows the number of connectable expansion boards, special adapters, extension
power supply units and special function blocks. The connector conversion adapter (FX
3G
-CNV-
ADP) is required as the expansion board when special adapters are connected.
→ For details, refer to 6.4 Number of Connected Extension Devices (Including Extension Cable).
•FX
3G Main units (40/60 point type)
•FX
3G Main units (14/24 point type)
CC-Link/LT
1. Number of input/output points (including input/output occupied points) Up to 128 points
Main unit
Input/output
extension
unit/block
Special
function
block
· Expansion board
· Special adapter
CC-Link/LT
master
CC-Link master
CC-Link system
2. Number of remote I/O points Up to 128 points
Remote I/O station Remote I/O station Remote I/O station Remote I/O station
Remote I/O station Remote I/O station Remote I/O station Remote I/O station
Number of input/output points on whole system Up to 256 points
Main unit
40/60 point type
Special adapter
(communication)
Up to 2 unitsUp to 2 unitsUp to 2 units Only 1 unitUp to 2 units
Expansion
board
Special
adapter
(analog)
Input/output
powered
extension unit
Extension
power supply
unit
Special
function block
Up to 8 units
Main unit
14/24 point type
Only 1 unitOnly 1 unitOnly 1 unit Only 1 unitUp to 2 units
Expansion
board
Special
adapter
(analog)
Input/output
powered
extension unit
Extension
power supply
unit
Special
function block
Up to 8 units
Special adapter
(communication)