PROFIBUS-DP - Parameterization in DIGSI
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SIPROTEC PROFIBUS-DP - Communication profile
C53000-L1840-B001-03
Figure 4-8 S7-400 PLC defined as master for time synchronization
Figure 4-9 CP443-5 Extended - Time synchronization
Note:
PROFIBUS-DP firmware version 02.00.05 and 03.00.03:
• The time interval for the cyclic time synchronization messages from the PROFI-
BUS-DP master which include the current date and time for time synchronization of
the SIPROTEC devices must be in the range of 50.05 to 61.95 seconds.
• Therefore, as shown above, “1 minute” has to be select at the time master.
Additional with PROFIBUS-DP firmware version 03.01.03 or higher:
• The following time intervals between time synchronization messages are also
possible:
• 1...15 seconds, 17...20 seconds, 26...30 seconds
The selection of one of the above-mentioned time intervals of less than 1 minute in
the time master does not change the precision of the time synchronization in the
SIPROTEC device.
If several time intervals are available in the time master then “1 minute” should be
used.
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