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7 Assignment of Input/Output Numbers and Unit Numbers
7.3 Assignment of Communication Channels
95
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
7.3 Assignment of Communication Channels
7.3.1 Assignment of communication channels
When the communication expansion board or special communication adapter is used, the main unit (CPU)
automatically assigns communication channels at the time of power ON. The number of available
communication channels varies depending on the main unit type.
• Main unit (40/60 point type) : Max 2ch
• Main unit (14/24 point type) : Max 1ch
1. In the case of main unit (40/60 point type)
"Ch1" is assigned to the communication expansion board connected to the BD1 connector or the first special
communication adapter connected to the connector conversion adapter.
"Ch2" is assigned to the communication expansion board, FX
3G-4EX-BD, FX3G-2EYT-BD, FX3G-8AV-BD
connected to the BD2 connector or the second special communication adapter connected to the connector
conversion adapter.
2. In the case of main unit (14/24 point type)
"Ch1" is assigned to the communication expansion board, FX
3G
-4EX-BD, FX
3G
-2EYT-BD, FX
3G
-8AV-BD
connected to the BD connector or the special communication adapter connected to the connector conversion
adapter.
ch1
Only between the communication expansion board,
FX
3G
-4EX-BD,
FX
3G
-2EYT-BD, FX
3G
-8AV-BD
and the special communication adapter
(which requires the connector conversion adapter) can be used.
ch2
Communication
special adapter
BD2 connector
ch2
Main unit (40/60 point type)
BD1 connector
ch1
Communication
expansion board,
FX
3G
-4EX-BD,
FX
3G
-2EYT-BD,
FX
3G
-8AV-BD
Only either one between the communication expansion board
and the special communication adapter (which requires the
connector conversion adapter) can be used.
ch1
Connector
conversion
adapter (BD1)
Communication special adapter
Communication
expansion
board (BD1)
Or
Communication
expansion
board (BD)
Main unit
(14/24 point type)
ch1
BD connector
ch1
Only either one between the communication expansion board,
FX3G-4EX-BD, FX3G-2EYT-BD, FX3G-8AV-BD
and the special
communication adapter (which requires the connector conversion
adapter) can be used.
ch1
Connector
conversion
adapter (BD)
Communication special adapter
Or