PROFIBUS data transfer
6.9 Cyclic data traffic
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
141
Table 6- 6 Binary status information in the cyclic frame
Byte Bit Value SENTRON WL SENTRON VL
COM15 COM20
0..3 Position of circuit breaker
0 Disconnected position
1 Connected position
2 Test position
0/1
3 Switch is not available
Not available
0..3 Status of the circuit breaker
0 Not ready
1 OFF
2 ON
2/3
3 Switch has tripped
4 Ready-to-close signal available Not available
5 Undervoltage release charged Not available
6 Spring energy store is compressed Not available
n
7 Overload warning present
0 An activated threshold has been
exceeded
Not available
1 An alarm signal is currently present Not available
2 PROFIBUS write protection disable deactivated, changes allowed
3 Status of the free user input Not available
0..7 Reason for last tripping operation
0 No tripping operation or last tripping operation acknowledged
1 Overload tripping (L)
2 Instantaneous short-circuit
3 Short time-delayed short-circuit (I)
4 Ground fault (G)
5 Tripping operation as a result of extended
protection function
Tripping operation as a result of extended
protection function (temperature)
6
4/5/6
7
Overload in neutral conductor
n+1
7 Load shedding alarm Not available
Control bytes
All three basic types contain a 2-byte block with the most important binary information for
controlling the circuit breaker. This is transferred with each frame.
The three basic types differ in the scope and content of the data reported by the circuit
breaker to the class 1 master (e.g. PLC) with each Data_Exchange. From the perspective of
the PLC, this data is by definition input data.
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