Date/Time

Step	Action
1	Launch the PowerTag Link webpage in the web browser.
2	Login with user name and password.
3	Click Settings > General > DATE/TIME.

Manual mode

The DATE/TIME page is used to set date and time and SNTP parameters as shown in the following figure:

NOTE: After the power shut down of any gateway, the gateway will reset to a default value of date and time. The default date and time value is 2000/1/1, 00:00:00.

You can reset the date and time manually or automatically.

Follow the procedure to reset the date and time in Manual mode:

Step	Action
1	Select Manual.
2	Enter the Date to be set in the format yyyy-mm-dd.
3	Enter the Time in the format hh:mm:sec.
4	Click Apply Changes to save the settings. Click Cancel Changes to revert the settings.

Follow the procedure to reset the date and time in Automatic mode:

Step	Action
1	Select Network Synchronization via SNTP/NTP to configure the date and time automatically via SNTP/NTP. Or Select Network Synchronization via Modbus TCP to configure the date and time via Modbus TCP.
2	Click Apply Changes to save the settings. Click Cancel Changes to revert the settings.

Step

Action

Select Network Synchronization via SNTP/NTP to configure the date and time automatically via SNTP/NTP.

Select Network Synchronization via Modbus TCP to configure the date and time via Modbus TCP.

Click Apply Changes to save the settings. Click Cancel Changes to revert the settings.

SNTP Mode

Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.

A less complex implementation of NTP, using the same protocol without the storage of state over extended periods of time is known as the Simple Network Time Protocol. It is used in embedded devices and in applications where high accuracy timing is not required.

When automatic time configuration is selected and NTP servers are configured, the PowerTag Link gateway can communicate with NTP and server to synchronize its time.

The PowerTag Link gateway supports time synchronization with remote server using SNTP. When SNTP is activated, time synchronization from one of the selected time servers can be achieved at every configured interval and also supports Modbus time services Get Date-Time (refer to Function 43-15: Read Date and Time) and Set Date-Time (refer to Function 43-16: Write Date and Time). The time is configured in 24-hour format.

Automatic Mode with SNTP Service

The PowerTag Link gateway receives date and time from SNTP server after every poll interval time. Follow the procedure to configure the date and time using SNTP/NTP parameters:

Step	Action
1	Enter the value for Poll Interval in hours that ranges from 1 through 63. The default value of poll interval is 1.
2	Select Obtain SNTP/NTP Servers Automatically via DHCP/BOOTP to obtain the server address automatically from SNTP or NTP servers.
3	Select Manual.
4	Enter the primary server name or IP address for Primary SNTP/NTP Server parameter. The primary server can be: IPv4 address IPv6 address Domain name
5	Enter the secondary server name or IP address for Secondary SNTP/NTP server parameter. This is an optional parameter.
6	Click Apply Changes to save the settings. Click Cancel Changes to revert the settings.