Vega VEGAFLEX 81 - Report Level (and Temperature)

85
10 Supplement
VEGAFLEX 81 • Modbus and Levelmaster protocol
42283-EN-140430
RTU Protocol
Thermo Electron Autopilot Levelmaster
Parameters for the bus communication
The VEGAFLEX 81 is preset with the default values:
Parameter Congurable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:
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Capitallettersareatthebeginningofcertaindataelds
•
Smalllettersstandfordataelds
•
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conguration
Report Level (and Temperature)
Request:
Parameter Length Code/Data
Report Level (and Temperature) 4 characters ASCII Uuu?
Response:
Parameter Length Code/Data
Report Level (and Temperature) 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
warning)
Levelininchesisrepeatedforsensorswith2levels.PVvalueistransmittedasrstmeasuredvalue,
SV as second measured value.
PV, SV, TV and QV can be adjusted via the sensor DTM.