Parameter assignment

9.1.2Operation as NTP client

Four IP addresses of NTP servers can be assigned for SICLOCK TC100 as an NTP client.

The servers are queried regularly, and a preferred server is selected according to a strict selection strategy.

For the strategy in the event of loss of server, see Redundancy (Chapter 2.6).

NTP Client

You activate the client service with the parameter /NTP Client/NTP Client (0.18.01).

IP addresses of the NTP servers

You can specify four IP addresses of NTP servers with the parameter

/NTP Client/NTP Server List[4] (0.18.02). The address 0.0.0.0 indicates that no server has been entered.

DNS names are not supported.

Current NTP server

The currently selected NTP server is displayed with the parameter

/NTP Client/Active Server (0.18.03). The address 0.0.0.0 indicates that no server has been entered.

Monitoring the server

Monitoring of the NTP servers can be set up with the parameter /NTP Client/Monitoring/Monitor Server (0.18.04).

9.1.3Redundancy

The priority in the event of loss of an external synchronization is defined by the setting of the parameter /Redundancy/Redundancy (0.09.10):

Setting "Master (radio clocks preferred to NTP)"

RADIO CLOCK is always accepted

NTP is used when RADIO CLOCK is not available.

Setting "Slave (NTP preferred to radio clocks)"

RADIO CLOCK is used when NTP is not available.

NTP is always accepted.

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9-7

SICLOCK® TC100 Operating Instructions

 

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Siemens TC100 manual Operation as NTP client, Redundancy

TC100 specifications

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