Power Supply - Endress+Hauser Dosimass Modbus RS485 Operating Instructions Manual

Dosimass Modbus RS485
Low flow cut off
Galvanic isolation
Protocol-specific data
Terminal assignment
Supply voltage
Power consumption
Endress+Hauser
The switch points for low flow cut off are user-selectable.
Device version: Modbus RS485, 2 switch outputs (batch), 1 status output, 1 status input
(Order code for "Output, input": option MD)
• Switch outputs (batch) on supply potential.
• Status output on supply potential.
• Status input galvanically isolated (connection C/D) or on supply potential (connection
A/B)
Modbus RS485
Protocol
Device type
Slave address range
Broadcast address range
Function codes
Broadcast messages
Supported baud rate
Data transfer mode
Data access
16.5

Power supply

→  27
DC 24 V (nominal voltage: DC 18 to 30 V)
• The power unit must be safety-approved (e.g. PELV, SELV).
• The maximum short-circuit current must not exceed 50 A.
2.5 W (no outputs)
Modbus Applications Protocol Specification V1.1
Slave
1 to 247
0
• 03: Read holding register
• 04: Read input register
• 06: Write single registers
• 08: Diagnostics
• 16: Write multiple registers
• 23: Read/write multiple registers
• 43: Read device identification
Supported by the following function codes:
• 06: Write single registers
• 16: Write multiple registers
• 23: Read/write multiple registers
• 1 200 BAUD
• 2 400 BAUD
• 4 800 BAUD
• 9 600 BAUD
• 19 200 BAUD
• 38 400 BAUD
• 57 600 BAUD
• 115 200 BAUD
• 230 400 BAUD
RTU
Each device parameter can be accessed via Modbus RS485.

For Modbus register information →  70
Technical data
59