Table of Contents
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Diagnosing and Troubleshooting
Note
• 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 Master Reset (3.2.3.) (Page 247) and start again.
• As a further resource, Understanding Ultrasonic Level Measurement is available on our
website. Go to www.siemens.com/level (www.siemens.com/level).
11.1
Communication Troubleshooting
11.1.1
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 (Page 273) for a
2. Verify that the wiring connections are correct.
11.1.2
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
If you continue to experience problems, go to our website at:
www.siemens.com/sitransLUT400 (www.siemens.com/sitransLUT400), and check the FAQs
for SITRANS LUT400, or contact your Siemens representative.
271
detailed list.
buttons, ensure Write Protection (5.1.) (Page 265) is set to the unlock value.
Operating Instructions, 04/2021, A5E33329501-AG
11
SITRANS LUT400
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Table of Contents
Troubleshooting
