Specifications

10 - 14
10. CONNECTION TO ALLEN-BRADLEY PLC
10.3 Ethernet Connection
10.3 Ethernet Connection
10.3.1 System configuration for connecting to ControlLogix or CompactLogix
(Ethernet connection type: EtherNet/IP (AB))
*1 Allen-Bradley product manufactured by Rockwell Automation, Inc. For details of the product, contact Rockwell Automation, Inc.
*2 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 standards.
*3 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.
*4 The connectable EtherNet/IP communication module differs depending on the PLC series.
(ControlLogix5550/5555/5560)
1756-ENET(10Mbps), 1756-ENBT(10/100Mbps)
(ControlLogix5570)
1756-EN2TR(10/100Mbps)
*5 The number of the connectable GOTs for 1 PLC differs depending on the PLC series.
(ControlLogix5550/5555/5560)
• When PLC:GOT is N:1, the following number of the PLCs can be connected to 1 GOT.
TCP: 128 or less
When PLC:GOT is 1:N, the following number of the GOTs can be connected to 1 PLC.
TCP: 64 or less (recommended to 16 or less)
(ControlLogix5570)
• When PLC:GOT is N:1, the following number of the PLCs can be connected to 1 GOT.
TCP: 128 or less
When PLC:GOT is 1:N, the following number of the GOTs can be connected to 1 PLC.
TCP: 128 or less (recommended to 16 or less)
EtherNet/IP
communication
module
ControlLogix,
CompactLogix
GOT
Connection cable
EtherNet/IP(AB), Gateway
Communication driver
PLC Connection cable GOT
Number of connectable
equipment
Series
EtherNet/IP
communication module
*1
Communi
cation
Type
Cable model
*2
Maximum
segment
length
*3
Option device
Model
*4
ControlLogix
1756-ENET(10Mbps)
*4
1756-ENBT(10/100Mbps)
*4
1756-EN2TR(10/100Mbps)
*4
Ethernet
• 10BASE-T
Shielded twisted pair cable
(STP) or unshielded
twisted pair cable (UTP) of
category 5 or higher
• 100BASE-TX
Shielded twisted pair cable
(STP) or unshielded
twisted pair cable (UTP) of
category 3 or higher
100m - (Built into GOT)
*7
CompactLogix - Ethernet 100m - (Built into GOT)
When PLC:GOT is N:1
TCP: 128 PLCs or less
for 1 GOT
When PLC:GOT is 1:N
TCP: 32 GOTs or less
(recommended to 16 or
less) for 1 PLC