Allen-Bradley Rockwell Automation 1734-AENT Manual de usuario Pagina 213

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Publication ENET-UM001I-EN-P - January 2010 213
Appendix
C
EtherNet/IP Network Connections
Introduction
EtherNet/IP communication modules use connections to manage
communication. A connection is a point-to-point communication mechanism
used to transfer data between a transmitter and a receiver. The EtherNet/IP
communication modules use these connections:
CIP connections for Logix-based communication.
A CIP connection transfers data from one Logix application running on
one en
d node to a second Logix application running on another end
node. A CIP connection is established over a TCP connection.
TCP/IP connections for EtherNet/IP communication.
A single TCP connection can support multiple CIP connections.
CIP Connections
Connected modules communicate more reliably than do unconnected
modules.
Examples of functions supported by CIP implicit (connected) messaging
include:
Logix controller message transfer to Logix controller
.
I/O or produced/consumed tag.
•program upload.
RSLinx DDE/OPC client.
PanelView polling of Logix controller.
Topic Page
CIP Connections 213
TCP Connections 214
Multicast Address Limit 215
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