Parameter assignment

9.2Connecting time receivers

The following options are available for connecting the time receivers::

Ethernet connection via NTP Server

Ethernet connection via SIMATIC Verfahren

The following sections describe the parameter assignment options.

9.2.1NTP server service

An NTP server is available at the Ethernet port. The NTP server supports the modes Any/unicast and Multicast according to RFC2030.

Any / unicast (standard mode)

This mode is used by, e.g., PCs.

You activate the NTP server in Any/unicast mode with the parameter entry /NTP Server/NTP Server/Operation (0.16.01) = "On". The settings "Off" and "Only when synchronized" are also available as options.

The setting "Only when synchronized" enables conditional operation. The server service is only active when the device is externally synchronized.

Multicast

This mode has to be set explicitly for each subnet.

You can set Multicast mode for up to four subnets with the parameter /NTP Server/Multicast[4]/Multicast[x]/Mode (0.16.02).

You define the Multicast IP address that will be used with the parameter entry "Multicast address", e.g. 192.168.2.255.

Setting options for parameter entry mode:

Off

10s – Standard mode, that is the coded time is time-zone independent

60s – Standard mode, that is the coded time is time-zone independent

10s with local time – for receivers without their own calendar

60s with local time – for receivers without their own calendar

You define the Multicast IP address that will be used with the parameter entry "Multicast address".

9-7

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SICLOCK® TC100 Operating Instructions

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Siemens TC100 manual Connecting time receivers, NTP server service, Any / unicast standard mode, Multicast, Off

TC100 specifications

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