202 Rockwell Automation Publication 1783-UM007G-EN-P - February 2017
Chapter 7 Configure Switch Features
Figure 6 - NTP-PTP Clock Mode
Table 36 - NTP-PTP Clock Mode Fields
Field Description
PTP Clock Settings
PTP Device Type Displays the PTP clock type of the switch, as determined by the Mode setting.
Number of PTP ports Displays the number of ports assigned to the PTP clock.
Clock Quality Displays a summary of the quality of the grandmaster clock:
• Class—Time and frequency traceability of the grandmaster clock.
• Accuracy—Expected accuracy of the grandmaster clock when the Best Master Clock algorithm is in use.
• Offset (log variance)— Offset between the local clock and an ideal reference clock.
Steps Removed Displays the number of hops from the local clock to the grandmaster clock.
Local clock time Displays the time stamp of the local clock.
PTP Time Property
Current UTC offset valid Indicates whether the current Coordinated Universal Time (UTC) offset is valid.
Current UTC offset Displays the offset between the International Atomic Time (TAI) and UTC in seconds.
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