Interface; Reading Out Diagnostic Information; Configuring Error Response Mode; Adapting The Diagnostic Information - Endress+Hauser Proline Prosonic Flow I 400 Operating Instructions Manual

Diagnosis and troubleshooting
134
12.6 Diagnostic information via communication interface
12.6.1

Reading out diagnostic information

Diagnostic information can be read out via Modbus RS485 register addresses.
• Via register address 6821 (data type = string): diagnosis code, e.g. F270
• Via register address 6859 (data type = integer): diagnosis number, e.g. 270
For an overview of diagnostic events with diagnosis number and diagnosis code
→  135
12.6.2

Configuring error response mode

The error response mode for Modbus RS485 communication can be configured in the
Communication submenu using 2 parameters.
Navigation path
Setup → Communication
Parameter overview with brief description
Parameter
Failure mode Select measured value
output behavior when a
diagnostic message occurs
via Modbus
communication.

12.7

Adapting the diagnostic information

12.7.1

Adapting the diagnostic behavior

Each item of diagnostic information is assigned a specific diagnostic behavior at the
factory. The user can change this assignment for specific diagnostic information in the
Diagnostic behavior submenu.
Expert → System → Diagnostic handling → Diagnostic behavior
You can assign the following options to the diagnostic number as the diagnostic behavior:
Options Description
Alarm The device stops measurement. The measured value output via Modbus RS485 and the
totalizers assume the defined alarm condition. A diagnostic message is generated.
The background lighting changes to red.
Warning The device continues to measure. The measured value output via Modbus RS485 and the
totalizers are not affected. A diagnostic message is generated.
Logbook entry only The device continues to measure. The diagnostic message is only displayed in the Event
logbook submenu (Event list submenu) and is not displayed in alternating sequence
with the operational display.
Off The diagnostic event is ignored, and no diagnostic message is generated or entered.
Proline Prosonic Flow I 400 Modbus RS485
Description
• NaN value
• Last valid value

NaN º not a number
The effect of this
parameter depends
on the option
selected in the
Assign diagnostic
behavior
parameter.
Options Factory setting
NaN value
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