KROHNE ALTOSONIC V EN - Manual (Page 85)

ALTOSONIC V
Operating Manual rev02 E 7.30850.34.00 Page 85 of 106
8.6 Modbus communication
The Modbus protocol defines a message structure that controllers, using a master-slave principle, will
recognise and use, regardless of the type of networks over which they communicate.
In the communication confiiguraton file COMS0300.DAT the configuration can be changed to make the
program compatible with the host system.
The program can act as master and as slave.
Both transmission modes ASCII and RTU are supported.
The data types supported are Boolean, Integer (16 bit), Long Integer (32 bit), Float (32 bit) and double
(64 bit).
With these data types all relevant data from the ALTOSONIC V can be retrieved.
The available data is grouped in 9 levels (groups):
1. Gross flow measurement
2. Standard flow measurement
3. Net flow measurement
4. Batching, includes normally the levels 1..3
5. Analysis, diagnostics, quality
6. Control data
7. Used settings (corrections on/of etc)
8. Master meter configuration (direct connection with duty meter)
9. Data measured but not directly used by Altosonic-V, but as an extra service. .
•
The data available in these fields can be shown real-time on the ALTOSONIC V flow processor
screen. See chapter RUNTIME USER WINDOWS.
• For more details on the Modbus protocol and on the available data by Modbus communication see
the ALTOSONIC V ModBus Manual.