Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 77)

Rockwell Automation Publication 2500-IN001C-EN-P - April 2014 77
Chapter
9
IntelliCENTER Options
EtherNet/IP Motor Control
Centers Basic information is provided in the following sections. For additional
information, refer to CENTERLINE 2500 Motor Control Centers with
EtherNet/IP Network, publication
2500-TD003 .
Connection Count
The EtherNet/IP network can accommodate a vast number of nodes. The
EtherNet/IP network does not have a specific maximum number of nodes like
other fieldbus networks. The limit is based on the number of connections the
EtherNet/IP scanner can make.
To estimate the number of connections a network uses, visit
http://www.rockwellautomation.com/solutions/integrated architecture/
resources3.html
for our EtherNet/IP Capacity Tool.
Cable Length Limitations
The EtherNet/IP network uses fiber or copper twisted-pair wiring. The
maximum length of copper twisted-pair wiring is 100 m between devices. There
is no cumulative length for the entire network. Fiber cable length varies by cable
design. Inside the MCC, all cables are copper twisted-pair.
IMPORTANT The 100 m maximum length must account for Ethernet cable inside the
column. To help determine cable lengths for your application, each MCC is
shipped with documentation identifying the cable length used within the MCC.
This cable length must be added to the length between the Grace port and the
externally-connected device.