ToE - Time over Ethernet

ToE – precise, cost-effective time synchronization for all Ethernet LAN „Clients“


Considerable advantages can be gained by using networks for time synchronization of clocks, clock systems and time servers.

Installation costs for networked clock systems can be drastically reduced.

The entire network including all components and systems is absolutely synchronized to the same time.

By including a time server (e.g. MOBATIME NMC or DTS 4130.timeserver) the exact atomic clock time signal received via the DCF 77 or GPS can be fed directly into the network in the form of NTP time information.

A considerable advantage is gained by the option of being able to integrate modern computer master clocks directly into the network. Via Ethernet LAN and NTP an almost unlimited number of slave clocks can be synchronized, no additional time signal receivers being necessary.In addition you can include numerous time-dependent switching and control functions for buildings system technology and other connected devices.

A LAN-based time system can be configured and monitored from any computer in the network.Malfunctions, error messages and alarms are signalled via alarm relays, using SNMP traps or e-mails. If the clocks have the new LAN-compatible MOBATIME clock circuitry on the network it is even possible to ascertain whether all the clocks are functioning correctly using the MOBATIME software Net Device Manager (NDM).

Using the NCI Network Clock Interface, non-LAN-compatible master clocks or even existing master clocks and slave clocks can also be connected to the LAN. Cabling can be reduced to the plug-in to the LAN of the individual end units.

Available Time over Ethernet products:

NTP movements SAN 00/SEN 00 for clocks up to 40 cm in size

These newly developed self-setting movements are synchronized directly from the network via NTP and powered by PoE.

ECO indoor slave clocks for NTP synchronization

With NTP movement SAN 00/SEN 00, powered by PoE, up to Ø 40 cm. Available with dial types 200 and 210 with defined hands specially for SAN/SEN movements.

MODERNA indoor slave clocks for NTP synchronization

With NTP movement SAN 00/SEN 00, powered by PoE, up to Ø 40 cm.Available with dial types 360 and 310 with defined hands specially for SAN/SENmovements.

STANDARD indoor slave clocks for NTP synchronization

With NTP movement SAN 00/SEN 00, powered by PoE, up to Ø 40 cm. Available with dial types 360 and 310 with defined hands specially for SAN/SEN movements. Clocks with Ø 50 to 80 cm need an integrated NCI and a MLU 190 movement.

Analogue slave clocks 50, 60 and 80cm in size with integrated NCI interface.

Clocks in the STANDARD range for MOBALine or DCF77 synchronization can be supplied with an integrated NCI interface and they canthen be connected to the Ethernet LAN.

Clocks in the PROFILINE range for MOBALine or DCF77 synchronization can be supplied with an integrated NCI interface and they canthen be connected to the Ethernet LAN.

Clocks in the METROLINE range for MOBALine or DCF77 synchronization can be supplied with an integrated NCI interface and they canthen be connected to the Ethernet LAN.

Digital clocks with direct NTP control

DC 57, 100, 180 range LED digital clocks, can be fitted with an optional NTP input. In that way they can be connected directly to the Ethernet LAN.

DK 57 range LED calendar clocks, can be fitted with an optional NTP input. In that way they can be connected directly to the Ethernet LAN.

NTP Timeservers for Multicast

The Net Master Clock NMC is a master clock, developed especially for network environment.
It is able to control self-setting NTP (Multicast) slave clocks and is used as an accurate NTP time reference (Time Server) for computer systems.
More Information about NMC and NTP Timeservers

Network Clock Interface NCI

The Network Clock Interface is synchronized within the network via the Network Time Protocol (NTP) by an NTP Timeserver (Multicast) and generates the usual MOBALine and DCF time codes in local time format. Therefore all slave clocks and master clocks with MOBALine or DCF 77 input can be synchronized from the Network Clock Interface NCI.