Technical data

Configuring time synchronization
5.4 Commissioning a central plant clock
Time synchronization (V7.1)
Function Manual, 03/2009, A5E01216578-01
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Assigning parameters to the SICLOCK TM/TS for NTP mode
Make the settings directly on the SICLOCK TM/TS.
1. Call the parameters of the SICLOCK TM/TS.
2. Set parameter 338/6A Ethernet to "On."
3. Select an unassigned IP address on your plant bus and configure this at parameter
343/6A of the SICLOCK TM/TS.
4. Enter "any/unicast" for parameter 550/6F "SNTP-Server".
Note
Check the parameter settings if necessary. Please note the following:
• If you are using a different central plant clock, set the parameters of this clock
accordingly.
• Ther SICLOCK TM/TS supports up to 50 NTP requests per second.
Note
To activate the NTP server on SICLOCK TM/TS assign parameters for SICLOCK TM/TS
in addition to the normal network operation as follows:
1. In the parameter 343/6A "IP Source Addr." in the menu 6A assign the device an IP
address.
2. Set the parameters 344/6A "Subnet mask" and possibly 345/6A "Default gateway" in
the menu 6A in accordance with the IP network.
3. In the menu 6F set the parameter 550/6F "SNTP Server" = "any/unicast".
Note
Changing parameters in the network menu of the SICLOCK TM/TS
You can only change the parameters in network menu 6A ...6F if network operation of the
device is temporarily disabled.
First set the parameter 338/6A "Ethernet" = off. After you have set the parameters, switch
network operation on again (parameter 338/6A "Ethernet" = on or synchronized).
Connecting the time receiver
To ensure that the central plant clock is in constant receipt of an accurate time, it should be
synchronized with a time receiver. The following time receivers are recommended in PCS 7:
● SICLOCK GPS1000
● SICLOCK GPSDEC
● SICLOCK DCFRS Industry version
Additional information
● Section "Rules for time synchronization in PCS 7 (Page 34)"
● The complete configuration settings for the SICLOCK TM/TS are provided in the
SICLOCK TM/TS documentation.