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6 Examination of System Configuration
6.2 Rules of System Configuration
70
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
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
*1
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)
*1. Available when the main unit is the AC power supply 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
*1
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
*1
Special
function block
Up to 8 units
Special adapter
(communication)