Description of device parameters Proline Promag 300 Modbus RS485
154 Endress+Hauser
Factory setting NaN value
Additional information Options
• NaN value
The device outputs the NaN value
5)
.
• Last valid value
The device outputs the last valid measured value before the fault occurred.
This effect of this parameter depends on the option selected in the Assign diag. beh
parameter.
Bus termination
Navigation Expert → Communication → Modbus config. → Bus termination (7155)
Description Displays whether the terminating resistor is enabled or disabled.
User interface • Off
• On
Factory setting Off
Additional information Selection
• Off
The terminating resistor is disabled.
• On
The terminating resistor is enabled.
For detailed information about enabling the terminating resistor, see the Operating
Instructions for the device, "Enabling the terminating resistor" section
Fieldb.writ.acc.
Navigation Expert → Communication → Modbus config. → Fieldb.writ.acc. (7156)
Description Use this function to restrict access to the measuring device via fieldbus (Modbus protocol).
Selection • Read + write
• Read only
Factory setting Read + write
5) Not a Number