Proline Promass F 500 Modbus RS485 Technical data
Endress+Hauser 189
Light emitting diodes (LED)
Status information Status indicated by various light emitting diodes
The following information is displayed depending on the device version:
• Supply voltage active
• Data transmission active
• Device alarm/error has occurred
Diagnostic information via light emitting diodes
Low flow cut off The switch points for low flow cut off are user-selectable.
Galvanic isolation The outputs are galvanically isolated from one another and from earth (PE).
Protocol-specific data
Protocol Modbus Applications Protocol Specification V1.1
Response times • Direct data access: typically 25 to 50 ms
• Auto-scan buffer (data range): typically 3 to 5 ms
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
Compatibility with
earlier model
If the device is replaced, the Promass 500 measuring device supports the
compatibility of the Modbus registers for process variables and diagnostic
information with the earlier Promass 83 model. It is not necessary to change
the engineering parameters in the automation system.
16.5 Power supply
Terminal assignment → 40
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