Reference: A938
Index: B
Page 76
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Instruction Manual – NPS914 Alarm and Indication IED
7. System integration
7.1. Communication protocols
7.1.1. NTP
When enabled, the NTP (Network Time Protocol) service can use external time sources to
synchronize the device's system time. The NTP client service uses an Ethernet connection to connect
to the NTP time server. NTP can be enabled by setting the primary time server and the secondary
time server parameters to the address of the system's NTP time source(s).
Table. 7.1.1. - 1. Server settings.
Name
Range
Description
Primary time
server address
0.0.0.0...255.255.255.255
Defines the address of the primary NTP server. Setting this parameter at
"0.0.0.0" means that the server is not in use.
Secondary time
server address
0.0.0.0...255.255.255.255
Defines the address of the secondary (or backup) NTP server. Setting this
parameter at "0.0.0.0" means that the server is not in use.
Table. 7.1.1. - 2. Client settings.
Name
Range
Description
IP address
0.0.0.0...255.255.255.255
Defines the address of the NTP client.
NOTE: This address must be different than the relay's IP address.
Netmask
0.0.0.0...255.255.255.255
Defines the client's netmask.
Gateway
0.0.0.0...255.255.255.255
Defines the client's gateway.
MAC address
-
Displays the MAC address of the client.
Network status
0: Running
1: IP error
2: NM error
3: GW error
Displays the status or possible errors of the NTP (client) settings.
Table. 7.1.1. - 3. Status.
Name
Range
Description
NTP quality for events
0: No sync
1:
Synchronized
Displays the status of the NTP time synchronization at the moment.
NOTE: This indication is not valid if another time synchronization method is used
(external serial).
NTP-processed message
count
0...2
32
–1
Displays the number of messages processed by the NTP protocol.
NOTE!
A unique IP address must be reserved for the NTP client. The relay's IP address cannot be used.
Additionally, the time zone of the relay can be set by connecting to the relay and the selecting the time zone
at
Commands
→
Set time zone
(SMART9).
