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PROFIBUS-DPV1 functions
149
11/04 MN01219002Z-EN
Format and meaning of the object data content
The following table displays the address location and the
meaning of the data content of the object. Furthermore, it
provides an example of how the data content can be
accessed by the application with the aid of the example
variable.
Table 34: Address location and meaning of the object data
content
Variable access
(example)
Data position
Meaning
LS_currents[1]
Octet 1 and 2
Root mean square current
phase 1
LS_currents[2]
Octet 3 and 4
Root mean square current
phase 2
LS_currents[3]
Octet 5 and 6
Root mean square current
phase 3
LS_currents[4]
Octet 7 and 8
Root mean square current
N-pole
LS_currents[5]
Octet 9 and 10
Maximum phase current
LS_currents[6]
Octet 11 and 12
Fault current
h
When accessing all data content of the object, please note
the Motorola coding format (Octet N: High-Byte,
Octet N+1: Low-Byte) used in PROFIBUS-DP. If the data
processing format in your DP master system deviates from
this standard, and the DP access commands do not
automatically include a conversion, it will be necessary to
implement and perform the conversion in your application
program. Please refer to the documentation of your DP
master system.
h
It depends on the type of connected circuit-breaker if the
root mean square current neutral pole and the fault
current are available.
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