Westermo MR Series - Manual (Page 246)

246 6622-3201
Web Interface and Command Line Reference Guide www.westermo.com
Confi gure > SNTP 4.83
The unit supports the Simple Network Time Protocol (SNTP). This protocol is used to synchronise
the unit’s internal clock with the time and date information provided by a remote computer. The
remote computer must be running an SNTP/NTP server in order to obtain this information.
Using the Web Page(s)
The Configure > SNTP page allows you to set up the parameters for the SNTP client. The SNTP
client can be used to update the unit’s real time clock when it is configured to connect to the
Internet (or a private IP network with an SNTP/NTP server).
Operational Mode:
Specifies the mode, either SNTP or NTP. If SNTP is used the accuracy of around 1 second is
achieved. If NTP is used 200 microsecond accuracy can be achieved.
NTP host:
This is the IP address or host name of the NTP server you wish to use.
Interval (hrs):
This is the interval (in hours) at which the SNTP client will attempt to update the real time
clock.
Randomised interval (s):
This parameter takes of the form [min,max] to define the SNTP interval between SNTP
requests. A random time between min and max is selected after each SNTP update. e.g.
500,5000
Check on power-up:
Specifies whether the unit will attempt to connect to the NTP server every time the unit is
booted.
Offset from GMT (hrs):
This parameter should be set to + or - the number of hours the unit’s time should be ahead or
behind Greenwich Mean Time.
Daylight Savings Parameters
The following parameters are used to adjust the time value received from the SNTP server to take
account of local daylight saving periods.
Daylight savings start month:
This is the month in which the daylight saving period starts.
Daylight savings start day:
This is the date in the month in which the daylight saving period starts.
Daylight savings start hour:
This is the hour on the day in which the daylight saving period starts.
Daylight savings stop month:
This is the month in which the daylight saving period ends.