Technical data
Proline Promass F 100 Modbus RS485
98
Low flow cut off
The switch points for low flow cut off are user-selectable.
Galvanic isolation
The following connections are galvanically isolated from each other:
• Outputs
• Power supply
Protocol-specific data
Protocol
Modbus Applications Protocol Specification V1.1
Device type
Slave
Slave address range
1 to 247
Broadcast address range
0
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
• → 30
• → 29
Pin assignment, device plug
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