User manual

Module Configuration PTQ-104S Rev2 ♦ Quantum Platform
User Manual IEC 60870-5-104 Server for Quantum
Page 70 of 195 ProSoft Technology, Inc.
February 22, 2013
The SNTP driver will compute a new clock value every 5 minutes using the
average value of 10 samples each collected over an approximate 6-second
period. This new value will be used to adjust the clock maintained by the SNTP
driver and used by the application. If a valid database register is specified, the
driver will place the time value into the module's database. The first two registers
will contain the number of seconds and the next two registers will contain the
number of microseconds since January 1, 1970.
A list of some of the common NTP servers can be obtained at http://www.ntp.org/
or, http://support.ntp.org/bin/view/Servers/WebHome
Other server lists can be found by searching the World Wide Web for "NTP
Servers".
5.4.1 NTP Server IP Address
Enter in dotted notation
This parameter sets the IP address of the NTP server to utilize for time
acquisition. Select an NTP server with the greatest accuracy that can be
accessed all the time from your network. Setting this IP address to 0.0.0.0
disables SNTP server requests.
5.4.2 Time Zone
-11 to 11
This parameter specifies the time zone offset to be used from the UTC time
zone. A value of zero uses UTC time. If the value entered is positive, the time
zone is west of the UTC time zone (that is, Eastern Standard Time is 5). If the
value entered is negative, the time zone is east of the UTC time zone (that is,
Continental Europe is -1).