Advanced Network
In situations where you have many clocks that need special configurations such as time offset, daylight saving or
special display options. The NetClock can obtain its configuration via a file placed on a TFTP server. If the
NetClock has been given the address of your TFTP server either by DHCP or by the NetClock.exe utility, on power
up it will request file NETCLOCK.CFG from the TFTP server. This file contains 1 or more sections.
[CLKALL] Setting in this section affects all clocks.
[MyClockName] This is the host name of an individual clock and setting in this section only affect this clock. This
will allow you set any particular clock differently from the rest of your clocks, if say you want one clock displaying
London time, one New York time etc.
Internet
Local TFTP
server
LAN Switch
London
Default SNTP Server 1
npl1.npl.co.uk
139.143.5.30
Default SNTP Server 2
ip-time-1.cern.ch
137.138.16.69
Default SNTP Server 3
time.nist.gov
192.43.244.18
New York
Tokyo
Hostname
CLKLON
Hostname
CLKNY
Hostname
CLKTKO
Example NETCLOCK.CFG
File
[CLKALL]
:
:
[CLKLON]
LOCALE=0
:
[CLKNY]
LOCALE=-18000
:
[CLKTKO]
LOCALE=32400
Note:
Commands that exist in NETCLOCK.CFG override settings stored in Flash Memory on the NetClock and
commands in [MyClockName] section override commands stored in Flash Memory and also commands in
[CLKALL] section.
NETCLOCK.CFG is a plain ASCII text files that contain simple single line commands as below.
[CLKALL]
Commands following this section header affect all clocks
[
MyClockName]
Commands following this section header affect clocks with hostname
MyClockName
LOCALE=
Local difference from GMT in seconds
SNTPENABLE=
1=Enable, 0=Disable (free running)
SNTPINTERVAL=
Time between SNTP requests in seconds
SNTPSERVER1=
Overrides default server 1 address of
139.143.5.30
(npl1.npl.co.uk)
SNTPSERVER2=
Overrides default server 2 address of
137.138.16.69
(ip-time-1.cern.ch)
SNTPSERVER3=
Overrides default server 3 address of
192.43.244.18
(time.nist.gov)
MYIPADDRESS=
Overrides default address of 192.168.0.27 or address obtained by DHCP
SUBNETMASK=
Overrides default subnet mask of 255.255.255.0 or subnet mask
obtained by DHCP
