Sntp Protocol - GE D90 Plus Instruction Manual
Line distance protection system
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Also See for D90 Plus:
- Instruction manual (688 pages) ,
- Communications manual (222 pages) ,
- Instruction manual (602 pages)
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CHAPTER 6: COMMUNICATIONS
NOTE:
SNTP protocol
PLUS
D90
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
TFTP Data UDP Port Number 1, TFTP Data UDP Port Number 2, TFTP Data UDP Port
Number 3, TFTP Data UDP Port Number 4
Range: 0 to 65535 in steps of 1
Default: 0
These settings specify data for UDP port numbers 1 through 4. A TFTP data port value of
zero specifies that the D90
Changes to the TFTP protocol settings will not become active until power to the D90
been cycled (off-to-on).
Plus
The D90
supports the Simple Network Time Protocol specified in RFC-2030. With SNTP,
Plus
the D90
can obtain clock time over an Ethernet network. The D90
client to receive time values from an SNTP/NTP server, usually a dedicated product using a
GPS receiver to provide an accurate time. Both unicast and broadcast SNTP are supported.
If SNTP functionality is enabled at the same time as IRIG-B, the IRIG-B signal provides the
Plus
time value to the D90
clock for as long as a valid signal is present. If the IRIG-B signal is
removed, the time obtained from the SNTP server is used. If either SNTP or IRIG-B is
Plus
enabled, the D90
clock value cannot be changed using the EnerVista UR
Setup software.
Plus
The UR
-series relays do not support the multicast or anycast SNTP functionality.
Select the Settings > Communications > Network > SNTP menu item to open the SNTP
protocol configuration window.
Figure 75: SNTP protocol configuration settings
The following settings are available to configure the SNTP protocol.
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the SNTP protocol.
Server IP Address
Range: standard IP address
Default: 0.0.0.0
This setting specifies the SNTP/NTP server IP address.
To use SNTP in unicast mode, this setting must be programmed to the SNTP/NTP server
IP address. Once this address is set, the D90
SNTP/NTP server. Since many time values are obtained and averaged, it generally takes
three to four minutes until the D90
server. It may take up to two minutes for the D90
the server is offline.
Plus
will automatically assign a port number.
Plus
attempts to obtain time values from the
Plus
clock is closely synchronized with the SNTP/NTP
Plus
to signal an SNTP self-test error if
NETWORK SETTINGS
Plus
has
Plus
acts as an SNTP
Plus
95
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