5. ETHERNET CONNECTION
5.2 System Configuration
5 - 9
5
ETHERNET CONNECTION
When connecting to MELSEC-FX
*1 The destination connected with the twisted pair cable varies with the configuration of the applicable Ethernet network system.
Connect to the Ethernet module, hub, transceiver or other system equipment corresponding to the applicable Ethernet network
system.
Use cables, connectors, and hubs that meet the IEEE802.3 10BASE-T/100BASE-TX standard.
A cross cable is available for connecting the GOT to the Ethernet module.
*2 A length between a hub and a node.
The maximum distance differs depending on the Ethernet device to be used.
The following shows the number of the connectable nodes when a repeater hub is used.
• 10BASE-T: Max. 4 nodes for a cascade connection (500m)
• 100BASE-TX: Max. 2 nodes for a cascade connection (205m)
When switching hubs are used, the cascade connection between the switching hubs has no logical limit for the number of
cascades.
For the limit, contact the switching hub manufacturer.
*3 For the system configuration of the Ethernet module, refer to the following manuals.
For FX Ethernet Interface Module User’s Manual
*4 Select one of the following [Controller Type] in [Ethernet] of GT Designer3.
• Ethernet module (FX Series): FX
For [Ethernet] of GT Designer3, refer to the following.
5.3.4 Ethernet setting
*5 When using an Ethernet module with the FX
3UC series, FX2NC-CNV-IF or FX3UC-1PS-5V is required.
*6 When using an Ethernet module with the FX
3U series, FX3U-CNV-BD, FX3U-422-BD, or FX3U-232-BD is required.
*7 FX
3U-ENET-ADP occupies one extension communication adapter CH (Max. 2 CHs) of the FX3U(C) or FX3G(C) and one extension
communication adapter CH (Max. 1 CH) of the FX3S. One CPU allows the connection of only one FX3U-ENET-ADP.
Ethernet
module
GOT
Connection cable
PLC CPU
Ethernet (FX), Gateway
Communication driver
PLC
Connection cable
*1
Maximum
segment
length
*2
GOT
Number of
connectable
equipment
Model name
Ethernet module
*3*4
Communication
type
Cable model Option device Model
MELSEC-FX
(FX
3U, FX3G)
FX
3U-ENET-L Ethernet
• 100BASE-TX
Shielded twisted pair
cable (STP) or unshielded
twisted pair cable (UTP)
of category 5 or higher
• 10BASE-T
Shielded twisted pair
cable (STP) or unshielded
twisted pair cable (UTP)
of category 3 or higher
100m - (Built into GOT) 2 GOTs
MELSEC-FX
(FX
3UC, FX3GC)
FX
3UC-1PS-5V,
FX2NC-CNV-IF
+
FX
3U-ENET-L
*5
Ethernet
MELSEC-FX
(FX
3U)
FX
3U-CNV-BD,
FX
3U-422-BD,
FX
3U-232-BD,
+
FX
3U
-ENET-ADP
*6*7
Ethernet
• 100BASE-TX
Shielded twisted pair
cable (STP) or unshielded
twisted pair cable (UTP)
of category 5 or higher
• 10BASE-T
Shielded twisted pair
cable (STP) or unshielded
twisted pair cable (UTP)
of category 3 or higher
100m - (Built into GOT) 4 GOTs
MELSEC-FX
(FX
3UC)
FX
3U
-ENET-ADP Ethernet
MELSEC-FX
(FX
3G)
FX
3G
-CNV-ADP,
+
FX
3U
-ENET-ADP
*7
Ethernet
MELSEC-FX
(FX
3GC)
FX
3U
-ENET-ADP
*7
Ethernet
MELSEC-FX
(FX
3S)
FX
3S
-CNV-ADP
+
FX
3U
-ENET-ADP
*7
Ethernet