
10 Time Synchronization
10.1 General
302
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
10.1
General
During operation, SICAM Q100 needs the date and time for all time-relevant processes. The term
time
is used
throughout this section to refer to both the date and the time.
The time synchronization in the SICAM Q100 is necessary to guarantee a common time basis for the commu-
nication with peripheral devices and time stamping of the process data.
SICAM Q100 supports both external and internal time synchronization. The type of time synchronization is
specified during the parameterization (see chapter 8.3.7.1). The external time synchronization from an NTP
server is preferred.
10.2
Internal Time Keeping
10.2.1
Time Format
The internal time is kept in UTC (Universal Time Coordinated) from 01.01.2000, 00:00 to 31.12.2099, 23:59.
To display the local time, for example on the HTML pages, you can configure a local time correction factor and
the automatic adjustment to daylight saving time during parameterization (see chapter 8.3.7.1).
10.2.2
Status Bits
FAIL Status Bit
The
FAIL
status bit implemented in the SICAM Q100 signals with "0" that the time is
valid
and with "1" that the
time is
invalid
.
The status of the FAIL bit corresponds to the "Clock error" operational indication, see chapter 14.
The following table lists the time stamps of events or indications for the displayed operational, error logs, and
audit logs according to status bit set/not set using the example of
date 2010-09-26, time 13:49.35246
:
DST Status Bit
With "1", the
DST
status bit implemented in the SICAM Q100 signals that the local daylight saving time is active.
The operational indication "Daylight saving time" is displayed.
Tabelle 10-1 FAIL Status Bit for Time Synchronization via NTP Server
FAIL
Output
0
2010-09-26 13:49.35:246
1
2010-09-26 13?49?35?246