
Publication ENET-UM527E-EN-P - October 2006
Use the Web Server Module To Connect Over Ethernet 123
TCP Connections
The web server module uses one TCP connection for each IP address
to which the module is connected. Multiple CIP connections can go
through a single TCP connection. Examples of TCP connections are:
• HMI (human-machine interface) to a controller that supports
EtherNet/IP communications.
• Logix MSG instruction to a controller or workstation.
• OPC or DDE accessing a controller.
The web server module supports 64 TCP connections that handle
CIP connections.
Additional Resources
Consult the following publication for more information.
You can view or download publications at
http://www.literature.rockwellautomation.com
. To order paper copies
of technical documentation, contact your local Rockwell Automation
distributor or sales representative.
Topic Publication Title Publication No.
EtherNet/IP CIP connections EtherNet/IP Performance and Application Guide ENET-AP001
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