Mobatime DSC. 250.4, Instruction Manual

Page: 38 / 144

38
BE-801372.01-Digital_clocks_manual-221114
©MOBATIME
www.mobatime.com
5 NTP AND POE CLOCK OPERATION
Clocks support IPv4 and IPv6 protocols. You can disable individual protocols by setting parameter n1 .
The default clock setting allows both protocols at the same time ( n1: 0 ).
For IPv4 mode, DHCPv4 is enabled by default ( n3: 1 ).
IPv6 mode allows up to 4 different priority IP addresses in downward order:
• DHCPv6
• manually configured IP address (fix)
• autoconfiguration (SLAAC / RA)
• local address link
By setting parameter
n10 you can disable DHCPv6
and / or auto‑configuration (SLAAC) by setting parameter n11 .
For IPv6 mode, DHCPv6 and auto‑configuration (SLAAC) are enabled by default:
1 for DHCPv6 menu item
n10: 1
2 for SLAAC menu item n11: 1
Calculation of Link Local Address:
fe80 :: 2 [2
nd
octet MAC]: [3
rd
octet MAC] ff: fe [4
th
octet MAC]: [5
th
octet MAC] [6
th
octet MAC]
Example:
•
MAC:
00: 16:91 : 12:34:56
• IPv6:
fe80 :: 216: 91ff: fe12: 3456
5.1 Unicast mode
The clock is synchronized to UTC (Universal Time Coordinated) from a NTP server (up to four
IPv4 / IPv6 addresses for NTP server configurable) and must have assigned its own IPv4 / IPv6
address. The clock requests in defined intervals (adjustable in menu item n9 ) the actual time from
the NTP server. If the server is not available, the clock tries to contact the other defined servers
in cyclic way until the valid response from the NTP server is received.
This operating mode supports the monitoring and configuration of the movement via the network
connection by means of the web interface ( n15: 1 ), SNMP ( n14: 1 ) or the MOBA‑NMS software tool.
For supervision and configuration with MOBA‑NMS, the clock's IPv4 / IPv6 address can be used
or the multicast group ( n7 ) address having last octet cleared to zero (presuming the multicast
is not disabled – n13: 1 ).
It is necessary to set appropriate time‑zone for correct displaying of local time and date (see chapter 3
for details).