Siemens SIPROTEC 7SS523 V3.2 Manual page 249

from the PC
with DIGSI
You can set the clock in the operating mode Internal Clock and also in Exter-
nal Impulse via Binary Input mode. The time step involved is indicated via
the operational annunciations "Clock SyncError on" and "Clock SyncError
off". In the mode External Impulse via Binary Input the annunciation
"Clock SyncError off" appears as soon as a pulse edge has been received after
the time was changed.
In the other operating modes manual setting is only accepted if the synchronization is
currently considered faulty i.e., the identifier ST is set in the clock status. This is to
avoid time steps. IRIG B is special since it allows the year to be changed at any time.
This is accompanied by the annunciations"Clock SyncError on" and "Clock
SyncError off", respectively.
The setting of date and time can also be relative (± 23:59:59) via the Diff.-time input
panel. This input option must not be confounded with the parameter Offset (see chap-
ter 5) which influences the synchronization time of the radio clock receiver.
To enter date and time at the central unit (PC linked to central unit) proceed as fol-
lows:
→
Click Device Set Date & Time (see Figure 6-24, page 233). The dialog box Set
clock & date in device opens. The displayed values show the actual date and
about the actual time. The day is determined automatically from the date and can-
not be edited.
Figure 6-24 Selecting the Set date & time command
Enter date and time in the corresponding boxes. Observe the correct notation
(see Figure 6-25, page 234).
Click OK to transfer the specified values into the device. The existing values are
modified and the current dialog box closes.
Controlling Device Functions
7SS52 V4 Manual
C53000-G1176-C182-1
233