VEGA VEGAFLEX 81 Modbus and Levelmaster protocol Coax probe - Manual (Page 80)

80
11 Supplement
VEGAFLEX 81 • Modbus and Levelmaster protocol
42283-EN-130314
Parameter Length Code/Data
List of Object ID 1 Byte
List of Object length 1 Byte
List of Object value 1 Byte Depending on the Object ID
11.5 Levelmaster commands
The VEGAFLEX 81 is also suitable for connection to the following RTUs with Levelmaster protocol.
The Levelmaster protocol is often called "Siemens" "Tank protocol".
RTU Protocol
ABB Totalflow Levelmaster
Kimray DACC 2000/3000 Levelmaster
Thermo Electron Autopilot Levelmaster
Parameters for the bus communication
The VEGAFLEX 81 is preset with the default values:
Parameter Configurable Values Default Value
Baud Rate 1200, 2400, 4800, 9600, 19200 9600
Start Bits 1 1
Data Bits 7, 8 8
Parity None, Odd, Even None
Stop Bits 1, 2 1
Address range Levelmaster 32 32
The Levelmaster commands are based on the following syntax:
•
Capital letters are at the beginning of certain data fields
•
Small letters stand for data fields
•
All commands are terminated with "<cr>" (carriage return)
•
All commands start with "Uuu", whereby "uu" stands for the address (00-31)
•
"*" can be used as a joker for any position in the address. The sensor always converts this in
its address. In case of more than one sensor, the joker must not be used, because otherwise
several slaves will answer
•
Commands that modify the instrument return the command with "OK“. "EE-ERROR" replaces
"OK" if there was a problem changing the configuration
Report Level (and Temperature)
Request:
Parameter Length Code/Data
Report Level (and Temperature) 4 characters ASCII Uuu?