Rockwell Automation 2090 Ultra3000 Installation Manual - Manual (Page 125)

Publication 2098-IN003E-EN-P — April 2004
Connecting Your Ultra3000 3-29
4. Insert the other end of the cable (from step 3) into the Receive
SERCOS connector on the ControlLogix module/SoftLogix PCI
Card and thread the connector on finger tight.
5. Complete the ring by connecting the Transmit and Receive
connectors from one drive to the next until all are connected
(refer to the examples above).
Refer to Appendix C for SERCOS fiber-optic cable and bulkhead
adapter catalog numbers.
Connecting to a DeviceNet
Network A DeviceNet network is an arrangement of electrical power and
device distribution. A DeviceNet network is planned and adjusted for
optimal communications.
Before proceeding to add devices, you need to record the following:
• Network data rate
• Network cable system map (topology) to which you are
connecting
• Distances between cable system components
• Device current draw and voltage drop for each device on the
network
• Limitation of the trunk and drop cables
Refer to the table below for recommended trunk and drop lengths.
Refer to the DeviceNet Cable System Planning and Installation
Manual (publication DN-6.7.2) for specific guidance in calculating
and attaching the Ultra3000-DN to a network.
Data Rates 125 Kbps 250 Kbps 500 Kbps
Thick Trunk Line 500 m (1,640 ft) 250 m (820 ft) 100 m (328 ft)
Thin Trunk Lengths 100 m (328 ft) 100 m (328 ft) 100 m (328 ft)
Maximum Drop Length 6 m (20 ft) 6 m (20 ft) 6 m (20 ft)
Cumulative Drop Budget 156 m (512 ft) 78 m (256 ft) 39 m (128 ft)