Troubleshooting
90 © SICK AG · Germany · All rights reserved · Subject to change without notice 8012471/ZN27/2017-06-09
Operating Instructions
LMS1xx Laser Measurement Sensors
Chapter 9
9.3 Indications of the 7-segment display
9.4 Detailed error analysis
The LMS1xx outputs occurring errors in various ways. Errors are output in stages and always 
permit detailed analysis:
 Communication errors can occur on the transfer of telegrams to the LMS1xx. The 
LMS1xx then returns an error code.
 In case of status errors occurring during a scan, error codes are written to a status log.
9.4.1 Field evaluation monitor
Using the field evaluation monitor, you can analyse whether and how evaluation fields are 
infringed and how the outputs on the LMS1xx behave.
PROJECT TREE, LMS…, MONITOR, FIELD EVALUATION MONITOR.
9.4.2 Field evaluation logging 
Using the field evaluation logging you can log, save and subsequently play back the ope-
ration of LMS1xx. It is used for diagnostics over extended periods and for the analysis of 
malfunctions or for the optimization of processes.
PROJECT TREE, LMS…, MONITOR, FIELD EVALUATION LOGGING.
9.5 SICK Support
If an error cannot be eliminated, it is possible that the LMS1xx is defective.
The LMS1xx cannot be repaired by the user, meaning that it is not possible to re-establish 
functions after a failure cannot be repaired by the user, meaning that it is not possible to re-
establish functions after a failure. Interrupting or modifying the LMS1xx will invalidate any 
warranty claims against SICK AG.
However, the LMS1xx can be rapidly replaced by the user, see section 8.2 “Exchanging an 
LMS1xx” on page 87.
 If an error occurs which cannot be eliminated, please contact SICK Support. Please 
refer to the back page of these operating instructions for your agent's contact details.
Important Before calling, make a note of all type label data such as type code, serial number, etc. to 
ensure faster processing.
Display Possible cause Rectification of the error
,
, …
No error Device in measurement mode
IDLE mode, the outputs are 
in the OFF state, the laser is 
switched off.
No error. If the criteria for the IDLE mode are 
withdrawn, readiness for operation is re-
established.
Motor starts No error
LMS1xx faulty  Send the LMS1xx to the manufacturer for 
repair.
Tab. 37: Indications of the 7segment display