Endress+Hauser MODBUS RS485, Operating Instructions Manual

Page: 76 / 92

Technical data LPGmass Modbus RS485
76 Hauser
Function codes • 03: Read holding register
• 04: Read input register
• 06: Write single registers
• 08: Diagnostics
• 16: Write multiple registers
• 23: Read/write multiple registers
Broadcast messages Supported by the following function codes:
• 06: Write single registers
• 16: Write multiple registers
• 23: Read/write multiple registers
Supported baud rate • 1 200 BAUD
• 2 400 BAUD
• 4 800 BAUD
• 9 600 BAUD
• 19 200 BAUD
• 38 400 BAUD
• 57 600 BAUD
• 115 200 BAUD
Data transfer mode • ASCII
• RTU
Data access Each device parameter can be accessed via Modbus RS485.

For Modbus register information, see "Description of device parameters"
documentation
16.5 Power supply
Terminal assignment →  24
Supply voltage The power unit must be tested to ensure it meets safety requirements (e.g. PELV, SELV).
Transmitter
• Modbus RS485, for use in non-hazardous areas and Zone 2/Div. 2:
DC 20 to 30 V
• Modbus RS485, for use in intrinsically safe areas:
Power supply via Safety Barrier Promass 100
Safety Barrier Promass 100
DC 20 to 30 V
Power consumption Transmitter
Order code for "Output"
Maximum
Power consumption
Option M : Modbus RS485, for use in intrinsically safe areas 2.45 W
Safety Barrier Promass 100
Order code for "Output"
Maximum
Power consumption
Option M : Modbus RS485, for use in intrinsically safe areas 4.8 W