Mitsubishi FX3U Series

FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
78
6 Examination of System Configuration
6.2 Rules of System Configuration
6.2 Rules of System Configuration
The system configuration must meet the following three requirements.
1 Number of input/output points
The total number of input/output points and remote I/O points on CC-Link or AS-i system must be
384 points or less on the whole system.
→ For details, refer to Section 6.3 "Number of Input/Output Points and Maximum Number of Input/
Output Points".
2 Number of connected special extension devices
The numbers of connectable expansion boards, special adapters and special function units/blocks
are shown below.
→ For details, refer to Section 6.4 "Number of Connected Special Extension Devices (Including
Extension Cable)".
CC-Link/LT
1. Number of input/output points (including input/output occupied points) Up to 256 points
Main unit
Input/output
extension
unit/block
Special
function
unit/block
• Expansion board
• Special adapter
CC-Link/LT
master
CC-Link master
or AS-i master
CC-Link or AS-i system
2. Number of remote I/O points Up to 256 points
*1
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 384 points
Remote I/O station Remote I/O station Remote I/O station Remote I/O station
*1. Regarding the type of network, the number of remote I/O is up to 224 points in CC-Link and is up to 248 points in
AS-i.
Input/output
extension block
Input/output
powered
extension unit
Special function
block
Special function
unit
When an expansion board other than FX 3U -CNV-BD is used, only 1 adapter can be connected.
Main unit
Expansion
board
Special adapter
(high-speed input)
Special adapter
(communication)
Special adapter
(analog)
Special adapter
(high-speed output)
Only 1 unitUp to 2 unitsUp to 2 unitsUp to 2 unitsUp to 4 units
Special adapter (up to 10 units
*1
)
Special function unit/block (up to 8 units)
*1. When an expansion board other than FX 3U -CNV-BD is used, up to 9 adapters can be connected.