Union Instruments CWD 2005 - 10.2.1.6. Profibus-DP Interface

Manual CWD 2005 Circuit diagrams
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Manual CWD2005.doc 99
10.2.1.6. Profibus-DP Interface
The CWD 2005 can be supplied with several bus-interfaces. The system provides
float Data in Intel Type and Byte Data. They can be connected to the fieldbus at the
serial interface. The binary data in Intel Format must be interpreted by the customer.
The by the manufacturer already programmed Anybus Comunicator can be
connected with the provided serial Interface Cable (see Page 92 Figure 25). The
Communicator is powered by common 24 Volt .
The blocs are interpreted according to following memory pattern
No.
Name
Byte
Description
1.
Float 4 Byte
inferior cal. val.
Inferior calorific value, unit: kJ/m
3
.
2.
Float 4 Byte
superior cal. val.
Superior calorific value, unit: kJ/m
3
.
3.
Float 4 Byte
Wobbe i
Inferior wobbe-index, unit: kJ/m
3
.
4.
Float 4 Byte
Wobbe s
Superior wobbe-index, unit: kJ/m
3
.
5.
Float 4 Byte
dv
Relative specific gravity, dimensionless.
6.
Float 4 Byte
Reserve
7.
Float 4 Byte
Reserve
8.
Float 4 Byte
Tin
Air temperature of the burning chamber inlet, unit: °C.
9.
Float 4 Byte
CO
Carbon monoxide percentage, unit: %. Only for instrument with
CO Module.
10.
Float 4 Byte
Air min
Minimum air requirement, unit: m
3
air pro m
3
gas.
11.
Float 4 Byte
Reserve
…
…
…
…
20.
Float 4 Byte
12345.6789
A test number to check the complete protocol.
21.
Byte 1 Byte
Operation
Operation Event.
22.
Byte 1 Byte
Filter change
Service needed: changing filter.
23.
Byte 1 Byte
Reserve
…
…
…
…
32.
Byte 1 Byte
Reserve
For the Anybus Communicator there is a separate manual available.