Rockwell Automation 1756-SYNCH ControlLogix SynchLink Module User Manual - Manual (Page 28)

Publication 1756-UM521C-EN-P - July 2004
2-8 Time Synchronization in the ControlLogix System
Ring Configuration
The ring configuration is a permutation of the daisy chain
configuration. In the ring chain configuration, the SynchLink network
starts and ends at the Master Node. You can include Center Nodes
(shown in Figure ) in the configuration as needed.
For an example of how to configure a Ring configuration, see Appendix D.
Cable Usage
You must use fiber optic cable to connect SynchLink modules in all
configurations. For more information on SynchLink fiber components,
see Table 1.2 and Table 1.3 on page 1-3.
For more information on choosing the correct cable lengths for your
application, see the SynchLink Design Guide, publication 1756-TD008.
Chapter Summary and
What’s Next In this chapter, you learned how the ControlLogix SynchLink module
fits into the ControlLogix system. For more information on SynchLink
Module Features, see Chapter 3.
42748
Master Node Center Node Center Node Center Node
ControlNet SynchLink
IMPORTANT
In the ring chain configuration, you can use a
maximum of 10 nodes.