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Chapter 2
Module Overview and Features
EtherNet/IP
Network Overview
12
EtherNet/IP D-Code M12
connector
Link 1 status LED
Module status LED
Node address switches
M8 I/O connectors/
status indicators
Power connector
(1)
Functional Earth grounds the I/O block's EtherNet/IP communication circuitry which is designed to mitigate the effect
of noise on the network. It requires a solid earth ground connection, either through a metal screw to a grounded
metal panel or through a wire.
The modules incorporate embedded switch technology. They support Star,
Tree, Daisychain or Linear, and Ring network topologies.
•
Star or Tree topologies can connect to either Port 1 or Port 2.
•
Daisy Chain/Linear topologies will pass communications from Port 1 to
2, or Port 2 to 1.
•
Ring topology will pass communications from Port 1 to 2, or Port 2 to 1.
The 1732E-IB8M8SOER and 1732E-OB8M8SR modules support the
management of network traffic to ensure timely delivery of critical data,
Quality of Service (QoS) and Internet Group Management Protocol (IGMP)
protocols are supported.
If the ring topology is used, the Ring Master (not the ArmorBlock EtherNet/IP
Dual Port 8-point Sequence of Events Input or Scheduled Output Modules)
must be designated in the system, and determines the beacon rate and the
timeout period. For more information on topologies, see the EtherNet/IP
Device Level Ring Application Technique, publication ENET-AT007. The 1732E-
IB8M8SOER and 1732E-OB8M8SR modules are CIP Sync slave only devices.
There must be another module on the network that functions as a master
clock.
Rockwell Automation Publication 1732E-UM003D-EN-E - November 2021
LINK1
LINK2
X10
NET
MOD
X100
X1
(1)
Functional Earth ground
EtherNet/IP D-Code M12
connector
Link 2 status LED
Network status LED
Node address switches
M8 I/O connectors
Power status
indicator
Power connector
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