Rockwell Automation 1789-L10_L30_L60 SoftLogix 5800 System User Manual - Manual (Page 55)

Rockwell Automation Publication 1789-UM002J-EN-P - December 2012 55
Communicate with Devices on an Ethernet Network Chapter 3
Possible solutions include the following.
Controller Connections over
the EtherNet/IP Network A Logix system uses a connection to establish a communication link between two
devices. Connections can be the following:
• Controller to distributed I/O or remote communication modules
• Produced and consumed tags
• Messages
All EtherNet/IP connections are unscheduled. An unscheduled connection is a
message transfer between controllers that is triggered by the requested packet
interval (RPI) or the program (such as an MSG instruction). Unscheduled
messaging lets you send and receive data when needed.
Over EtherNet/IP network, the SoftLogix controller supports the following:
• 64 TCP/IP connections for EtherNet/IP communication
• 1 single TCP connection can support multiple CIP connections
• 128 CIP connections for Logix-based communication
A CIP connection transfers data from one Logix application running on
one end-node to a second Logix application running on another end-node.
A CIP connection is established over a TCP connection.
Solution Description
Multi-homed Windows 2003 member server on active
directory or mixed domain Connect both Ethernet modules to domain controllers so that they both receive correct routing information.
Multi-homed personal computer not connected to a
domain and set up in a work group. Configure both Ethernet modules with correct IP address information by using either a DHCP server or by static IP
address assignment. When IP address information is assigned to the Ethernet modules, the modules do not have to
independently determine domain relationships.
IMPORTANT If you have multiple networks, you must have gateways configured to reach
those networks.