14.14
SEL-400 Series Relays Instruction Manual Date Code 20171006
ASCII Command Reference
Command Description
COM PTP
The COM PTP command provides a report of the PTP data sets maintained by
the device as well as statistics for the measured time offsets with the parent (mas-
ter) clock. The PTP data sets contain information about the state, identity, and
configuration of the local, parent, and grandmaster clocks in addition to proper-
ties of the time being distributed by the grandmaster clock.
If EPTP = N or the relay hardware does not support PTP, then the COM PTP
command will respond with
PTP Not Enabled. If a settings change is in progress
or if the hardware is not yet initialized, then the COM PTP command will
respond with
Data unavailable, please try again later.
Table 14.36 COM PTP Command
Command Description Access Level
COM PTP Display PTP data sets and offset statistics 2
COM PTP C Clears PTP offset statistics 2
=>>COM PTP <Enter>
Relay 1 Date: 02/24/2016 Time: 15:08:43.516
Station A Serial Number: 0000000000
PTP offset statistics previously cleared on 02/24/2016 14:08:36.303 (UTC)
Settings Data Set
PTP Profile : Default
Transport Mechanism : Layer2
Path Delay : P2P
Default Data Set
Two Step : true
Clock Identity : 00 30 A7 FF FE 44 55 66
Number of Ports : 1
Clock Quality
Clock Class : 255
Clock Accuracy : 254
Offset Log Variance : 0
Priority1 : 255
Priority2 : 255
Domain Number : 1
Slave Only : true
Current Data Set
Steps Removed : 1
Offset from Master : -5 ns
Mean Path Delay : 0 ns
Parent Data Set
Parent Port Identity
Clock Identity : 00 30 A7 FF FE 04 7C 22
Port Number : 1
Grandmaster Clock Identity : 00 30 A7 FF FE 04 7C 22
Grandmaster Clock Quality
Clock Class : Synchronized with PTP timescale (6)
Clock Accuracy : Within 25 ns
Offset Log Variance : 0
Grandmaster Priority1 : 0
Grandmaster Priority2 : 0
Figure 14.1 Sample COM PTP Command Response
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