Endress+Hauser Proline Prosonic Flow B 200 Operating Instructions Manual page 106

Diagnostics and troubleshooting
106
For access
Problem
No write access to parameters
No write access to parameters
No connection via HART protocol
No connection via HART protocol
No connection via service interface
Possible causes
Hardware write protection enabled
Current user role has limited access
authorization
Missing or incorrectly installed
communication resistor.
Commubox
• Connected incorrectly
• Configured incorrectly
• Drivers not installed correctly
• USB interface on computer
configured incorrectly
Incorrect configuration of USB
interface on PC or driver not
installed correctly.
Proline Prosonic Flow B 200 HART
Remedial action
Set the write protection switch on
the main electronics module to the
OFF position .
1. Check user role →  46.
2. Enter correct customer-specific
access code →  46.
Install the communication resistor
(250 Ω) correctly. Observe the
maximum load →  26.
Observe the documentation for the
Commubox.

FXA195 HART: Document
"Technical Information"
TI00404F
Observe the documentation for the
Commubox.

FXA291: Document
"Technical Information"
TI00405C
Endress+Hauser