Siemens SIPROTEC 7SA522 Manual page 27

Baud rate
Time
synchronization
Status bit for
metered
measurands
SIPROTEC PROFIBUS-DP - Communication profile
C53000-L1840-B001-03
Note:
The DDB files/GSD files of the PROFIBUS-DP communication modules of the
SIPROTEC devices are enclosed within the parameterization system DIGSI:
DDB files/GSD files in the directory:
• "...\SIEMENS\DIGSI4\MANAGER\S7DATA\GSD" or
• "...\SIEMENS\STEP7\S7DATA\GSD" at installation of DIGSI and STEP7.
Associated Bitmap files:
• "...\SIEMENS\DIGSI4\MANAGER\S7DATA\NSBMP" or
• "...\SIEMENS\STEP7\S7DATA\NSBMP" at installation of DIGSI and STEP7.
The PROFIBUS-DP slave of the SIPROTEC devices supports automatic baud rate
recognition. There are no settings necessary concerning the baud rate during the
parameterization of the SIPROTEC devices.
The baud rate is provided by the PROFIBUS-DP master.
The following baud rates are supported by the PROFIBUS communication modules:
Connection
Isolated RS485 interface
(PSE module)
Fibre-optical interface
(PSO module)
Table 2-2 PROFIBUS communication moduls for SIPROTEC devices:
Supported baud rates
Note:
After baud rate change at the PROFIBUS-DP master a silent time of at least 2 sec-
onds is necessary on the bus so that the PROFIBUS-DP slave of the SIPROTEC
device can recognize the baud rate change and start the automatic baud rate recog-
nition again (short-time break of the bus connection at the PROFIBUS-DP master or
the like).
GlobalSection.DP_TimeSyncEnable
If the time stamp mechanism of PROFIBUS System Management Service is used for
time synchronization of the SIPROTEC devices then the evaluation of time synchro-
nization messages from PROFIBUS has to be enabled on the communication module.
Ref. to chap. 4.4 for further information about parameter settings of time synchroniza-
tion via PROFIBUS.
GlobalSection.DP_CountersWithStatus
Counters (metered measurands) are transferred via PROFIBUS-DP as unsigned long
values.
The meaning of the status bit (most significant bit of the unsigned long value) can be
defined with this paramter (ref. to chap. 3.6).
Supported baud rates
9.6; 19.2; 93.75; 187.5; 500; 1500; 3000; 6000 kB/s
9.6; 19.2; 93.75; 187.5; 500; 1500 kB/s
Parameters and properties
27