×

Method and apparatus for ethernet prioritized device clock synchronization

  • US 7,028,204 B2
  • Filed: 04/02/2002
  • Issued: 04/11/2006
  • Est. Priority Date: 09/06/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. An Ethernet industrial control system for transferring a plurality of messages, wherein the messages are tagged with identifiers of varying levels of priority, ranging from a highest priority to a lowest priority, the system comprising:

  • a serial network bus;

    means for placing the message onto the bus, wherein a message having a higher priority identifier is placed onto the bus before placing a message with a lesser priority identifier onto the serial network bus;

    a slave device communicatively coupled to the bus; and

    ,a clock synchronization message for the slave device is tagged with the highest priority identifier.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×