Technical data

Configuring time synchronization
5.4 Commissioning a central plant clock
Time synchronization (V7.1)
Function Manual, 03/2009, A5E01216578-01
69
5.4.4 Commissioning the DCF 77 receiver
Introduction
DCF 77 is an officially approved standard time in Germany.
The DFC 77 radio signal is limited to a radius of 800 km around the Frankfurt/Main area. In
regions where the DCF 77 radio signal cannot be received, use of a GPS receiver is
recommended. You need a DCF 77 receiver to use this radio signal for time synchronization
of your PCS 7 plant.
Structure of the DCF 77 receiver
The following components are included in the scope of delivery of a DCF 77 receiver:
● An antenna head with or without an antenna frame.
The DCF 77 receiver is located in the antenna head and demodulates the DCF 77 signal.
● Software for installation on the target system to be synchronized
If the DCF 77 receiver is being connected directly to the central plant clock, there is no
need for any additional driver software.
Overview of commissioning tasks
The table below shows the commissioning tasks that are needed to connect a DCF 77
receiver to a central plant clock for the purpose of time synchronization within the context of
a PCS 7 plant:
Step What?
1 First commissioning of the DCF 77 receiver
Configure the DCF 77 receiver with the aid of the associated commissioning software.
2 Connect the DCF 77 receiver cable
3 Align the antenna
"DCF 77 reception service" software
The "DCF 77 reception service" software is supplied together with the SICLOCK TM/TS. You
will need the "DCF 77 reception service" software in the following scenarios:
● When connecting the SICLOCK TM/TS to a domain controller
If you are using the SICLOCK TC 400, the DCF 77 reception service will not be required.
● When connecting a DCF 77 receiver directly to a PC station
You will find additional information on this topic in Section "
Configuring directly connected
time receivers (Page
96)".