Siemens Plant Central Clock TC100 - Manual (Page 69)

Parameter assignment and operation of the device
8-6  © Siemens AG 2010 All Rights Reserved
SICLOCK ® TC100 Operating Instructions
8.1 Status display
When the device is switched on, operation and status display are not possible for
a brief ramp-up time.
Figure 8-2 Device ramp-up display after switch on
The time, date and current synchronization state are shown during operation.
Figure 8-3 Example of display during operation
SICLOCK TC100
.......
09:48:26
→
NTP
Fr, 01. Oct. 2010
Table 8-1 Possible synchronization states
Display Description
→
Q No external synchronization
→
NTP External synchronization via NTP active.
→
DCF1 1) External synchronization active via DCF signal to
RADIO CLOCK.
→
GPS1 1) External synchronization active via GPS signal to
RADIO CLOCK.
→
MBG1 External synchronization active via Meinberg telegram to
RADIO CLOCK.
→
NME1 External synchronization active via NMEA telegram to
RADIO CLOCK.
--1 flashing
2) The external synchronization to the RADIO CLOCK has not
supplied a signal for more than 30 minutes (default setting),
and a switch has not yet been made to a substitute
synchronization.
1) If the display flashes, no valid signal is currently being received.
2) This occurs when the timeout selected for switching to the substitute
synchronization is longer than the monitoring timeout for the external
synchronization.
The timeout for switching to the substitute synchronization can be set with the
following parameter entry:
/Redundancy/Redundancy/Timeout (0.09.10)
The timeout for the external synchronization can be set with the following
parameter entry:
/Inputs/Input 1/Monitoring/Timeout (0.20.01)