Data library
8.6 Data sets
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
199
8.6
Data sets
8.6.1
Data set DS 0 S7-V1 system diagnostics
This section explains the structure of the read/write data sets that in turn consist of the data
points described in the previous section. This allows the data sets transferred via PROFIBUS
to be interpreted in the master.
The SENTRON circuit breaker communicates via PROFIBUS in a cyclic connection with a
class 1 master, e.g. a PLC. In addition to the data in the cyclic channel, the master can scan
other data (event-driven) in the form of DPV1 data sets. Writing and controlling via DPV1
data sets is also possible. A connection with a class 2 master would also provide the DPV1
data sets (e.g. SIMATIC OPC). This section is concerned with the detailed description of
these data sets.
The data sets are described in chronological, rising order. The header of the table also
includes an indication in each case of whether this data set can be read and written.
The table below shows the content of data set 0 that contains the information as to whether
the slave is signaling an external diagnosis.
The table below contains the data sets DS0:S7-V1 system diagnostics (length 4 bytes, read-
only):
Table 8- 14 Content of data set 0
Byte
Description
Data
point
Source
WL
Source VL Format Length
(bits)
Scaling
0
0x0F, if an external diagnosis is present, 0x00,
if there is no external diagnosis
—
COM15
COM20
—
8
—
1
Fixed at 0x03
—
COM15
COM20
—
8
—
2
Fixed at 0x00
—
COM15
COM20
—
8
—
3
Fixed at 0x00
—
COM15
COM20
—
8
—