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94 Rockwell Automation Publication 1783-UM007I-EN-P - December 2017
Chapter 3 Configure Switch Features
Configure Time Synchronization via the Logix Designer Application
To configure time synchronization, follow these steps.
1.
In the navigation pane, click Time Sync Configuration.
2.
From the Clock Type pull-down menu, choose a mode.
The available modes vary based on the switch model.
3.
To complete the remaining fields, refer to the figure and table that
corresponds to your mode.
Sync Interval Type the time interval, specified as the logarithmic mean in seconds, for sending synchronization messages.
Valid values:
• -1—half second
• 0—1 second
• 1— 2 seconds
Default: 0 (1 second)
Sync Fault Limit Type the maximum clock offset before PTP attempts to reacquire synchronization.
Valid values: 50…500000000 nanoseconds
Default: 50000 nanoseconds
IMPORTANT: We recommend against setting the sync limit below the default (50000 nanoseconds). Use values below 50000 nanoseconds only in
networks with a very high-precision Grandmaster clock. These networks have a critical need to keep very sensitive devices synchronized.
VLAN Id To configure PTP on a VLAN of a trunk port, type the VLAN ID. Only PTP packets in the VLAN you specify are processed. PTP packets from other
VLANs are dropped. You can only enable PTP on one VLAN on a trunk port.
Valid values: 1…4094
The default is the native VLAN of the trunk port.
Table 31 - NTP-PTP Clock Mode Fields (Continued)
Field Description
Mode Page
Boundary 95
End to End 97
Forward 97
NTP-PTP Clock 98