Diagnosing And Troubleshooting; Communication Troubleshooting - Siemens SITRANS LUT400 Operating Instructions Manual

Diagnosing and Troubleshooting

Notes:
• Many of the parameters referenced and techniques described here require a good
understanding of ultrasonic technologies and Siemens echo processing software. Use
this information with caution.
• If the setup becomes too confusing do a
• As a further resource,
website. Go to www.siemens.com/level.

Communication Troubleshooting

Generally
1. Check the following:
• There is power at the device
• The optional LCD is showing the relevant data
• The device can be programmed using the local push buttons.
• If any fault codes are being displayed, see "General Fault Codes" on page 233
for a detailed list.
2. Verify that the wiring connections are correct.
Specifically
1. The SITRANS LUT400 is set to communicate via a HART modem but no
communication is returning to the master.
• Check that the device address is set correctly for the HART network.
2. A SITRANS LUT400 parameter is set via remote communications, but the parameter
remains unchanged.
• Try setting the parameter from the local push buttons. If it can not be set using
the buttons, ensure
If you continue to experience problems, go to our website at:
www.siemens.com/sitransLUT400, and check the FAQs for SITRANS LUT400, or contact
your Siemens representative.
A5E33329501 SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
3.2.3. Master Reset
Understanding Ultrasonic Level Measurement
5. 1 . Write Protection
and start again.
is available on our
is set to the unlock value.
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