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CHAPTER 3: TIME PROTOCOLS
REAL-TIME CLOCK
869 MOTOR PROTECTION SYSTEM – COMMUNICATIONS GUIDE
3-3
PTP Configuration
Path
:
Setpoints > Device > Real Time Clock > Precision Time
PORT 4(5) PTP FUNCTION
Range: Disabled, Enabled
Default: Enabled
When the port setting is selected as “Disabled,” PTP is disabled on the port. The relay
does not generate, or listen to, PTP messages on the port.
PORT 4(5) PATH DELAY ADDER
Range: 0 to 60000 ns in steps of 1 ns
Default: 0 ns
The time delivered by PTP is advanced by the time value in the setting prior to the time
being used to synchronize the relay’s real time clock. This is to compensate for time
delivery delays not compensated for in the network. In a fully compliant Power Profile
(PP) network, the peer delay and the processing delay mechanisms compensate for all
the delays between the grandmaster and the relay. In such networks, the setting is zero.
In networks containing one or more switches and/or clocks that do not implement both
of these mechanisms, not all delays are compensated, so the time of message arrival at
the relay is later than the time indicated in the message. The setting can be used to
approximately compensate for the delay. Since the relay is not aware of network
switching that dynamically changes the amount of uncompensated delay, there is no
setting that always completely corrects for uncompensated delay. A setting can be
chosen that reduces worst-case error to half of the range between minimum and
maximum uncompensated delay if these values are known.
PORT 4 PTP FUNCTION:
Disabled
PORT 4 PATH DELAY ADDER:
0 ns
Message
Message
Message
Message
Message
n
Precision Time
n
Range: Enabled, Disabled
Default: Disabled
n
REAL TIME CLOCK
PORT 4 PATH DELAY
ASYMMETRY: 0 ns
STRICT POWER PROFILE:
Enabled
PORT 5 PATH DELAY
ASYMMETRY: 0 ns
Range: 0 to 60000 ns in steps of 1
Default: 0 ns
Range: -1000 to +1000 ns in steps of 1
Default: 0 ns
Range: -1000 to +1000 ns in steps of 1
Default: 0 ns
Range: Enabled, Disabled
Default: Enabled
Message
Message
Message
Message
Range: 1, 2
Default: 1
Range: 0 to 4095
Default: 0
Range: 0 to 7
Default: 4
Range: 0 to 255
Default: 0
PTP DOMAIN NUMBER:
0
PTP VLAN PRIORITY:
4
PTP VLAN ID:
0
PTP PRIORITY:
1
PORT 5 PTP FUNCTION:
Disabled
Range: Enabled, Disabled
Default: Disabled
Message
PORT 5 PATH DELAY ADDER:
0 ns
Range: 0 to 60000 ns in steps of 1
Default: 0 ns
Содержание 869
Страница 6: ...1 2 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE COMMUNICATIONS CHAPTER 1 INTRODUCTION...
Страница 18: ...2 12 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE ETHERNET PORTS CHAPTER 2 COMMUNICATION PORTS...
Страница 36: ...4 12 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE DNP IMPLEMENTATION CHAPTER 4 DNP 3...
Страница 82: ...8 24 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE THE IEC 61850 CONFIGURATOR CHAPTER 8 IEC 61850...
Страница 84: ...9 2 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE CHAPTER 9 FILE TRANSFER PROTOCOLS...
Страница 94: ...10 10 869 MOTOR PROTECTION SYSTEM COMMUNICATIONS GUIDE MODBUS PROTOCOL CHAPTER 10 MODBUS PROTOCOL...