VEGA VEGAPULS 62 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol Approval according to LPR radio standard - Manual (Page 70)

RTU Protocol
ABB Totalflow Modbus RTU, ASCII
Bristol ControlWaveMicro Modbus RTU, ASCII
Fisher ROC Modbus RTU, ASCII
ScadaPack Modbus RTU, ASCII
Thermo Electron Autopilot Modbus RTU, ASCII
Parameters for the bus communication
The VEGAPULS 62 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 Modbus 1 … 255 246
Start bits and data bits cannot be modified.
General configuration of the host
The data exchange with status and variables between field device and host is carried out via register.
For this, a configuration in the host is required. Floating point numbers with short prevision (4 bytes)
according to IEEE 754 are transmitted with individually selectable order of the data bytes (byte
transmission order). This "Byte transmission order" is determined in the parameter "Format Code".
Hence the RTU knows the registers of the VEGAPULS 62 which must be contacted for the variables
and status information.
Format Code Byte transmission order
0 ABCD
1 CDAB
2 DCBA
3 BADC
70 VEGAPULS 62 • Approval according to LPR radio standard
10 Supplement
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