VEGA VEGAPULS 67 (≥ 2.0.0 - ≥ 4.0.0) Modbus and Levelmaster protocol - Manual (Page 64)

64
11 Supplement
VEGAPULS 67 • Modbus and Levelmaster protocol
41369-EN-121011
VEGAPULS 67 and is activated/deactivated via a slide switch.
4
1
3 3 3
2
+
+
power supply
MODBUS
D0 D1 IS GND
USB
+
+
power supply
MODBUS
D0 D1 IS GND
USB
+
+
power supply
MODBUS
D0 D1 IS GND
USB
1 3 4 5 2 off on ( )
(
)
(-)
(-) 1 3 4 5 2 off on ( )
(
)
(-)
(-) 1 3 4 5 2 off on ( )
(
)
(-)
(-)
Fig. 51: Bus architecture Modbus
1 RTU
2 Connection resistor
3 Bus participant
4 Voltage supply
11.2 Protocol description
The VEGAPULS 67 is suitable for connection to the following RTUs with Modbus RTU or ASCII
protocol.
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
11.2 Parameters for the bus communication
The VEGAPULS 67 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.