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10 Supplement
VEGAPULS 69 • Modbus and Levelmaster protocol
47252-EN-210205
10.6 Levelmaster commands
The VEGAPULS 69 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 VEGAPULS 69 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)
Parameter
Length
Code/Data
Request:
Report Level (and Tem-
perature)
4 characters ASCII
Uuu?
Response:
Report Level (and Tem-
perature)
24 characters ASCII
UuuDlll.llFtttEeeeeWwwww
uu = Address
lll.ll = PV in inches
ttt = Temperature in Fahrenheit
eeee = Error number (0 no error, 1
level data not readable)
wwww = Warning number (0 no warn-
ing)
PV in inches will be repeated if "
Set number of floats
" is set to 2. Hence 2 measured values can be
