Proline Promass E 300 Modbus RS485
Technical data
Hauser
177
Local display
Plain text display
With information on cause and remedial measures
Backlight
Red backlighting indicates a device error.
Status signal as per NAMUR recommendation NE 107
Interface/protocol
• Via digital communication:
Modbus RS485
• Via service interface
• CDI-RJ45 service interface
• WLAN interface
Plain text display
With information on cause and remedial measures
Web browser
Plain text display
With information on cause and remedial measures
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 → 142
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
