166 Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Chapter 10 Develop Integrated Motion over an EtherNet/IP Network Application
Time Synchronization
Integrated motion over an EtherNet/IP network requires time synchronization,
also known as CIP Sync. CIP Sync provides accurate real-time (real-world time)
or Coordinated Universal Time (UTC) synchronization of Compact
GuardLogix 5370 controllers and devices that are connected over an EtherNet/
IP network.
CIP Sync is a time synchronization protocol that can be applied to various
applications. This chapter focuses on using the protocol in applications with
Integrated Motion over an EtherNet/IP network.
All controllers and communication modules must have time synchronization
enabled to participate in CIP Sync.
CIP Sync requires that devices in the system function in the following roles:
• Grandmaster, also known as the coordinated system time (CST) master
- Sets time for entire system and passes the time to a Master
• Master - Sets time for its backplane
• Slave - Uses time set by Master
You can enable time synchronization on the Date/Time tab of the Controller
Properties dialog box.
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