© SICK AG • Presence Detection • Subject to change without notice • 8015887
47
Operating instructions Register sensors RS25
Troubleshooting
12 Troubleshooting
Potential malfunctions and rectification measures are described in the
table below and in the next chapter.
In case of malfunctions that cannot be rectified using the information
below, please contact the manufacturer. Please refer to the back page of
these operating instructions for your agent's contact details.
Faults may occur during the teach-in process or as a result of other events,
such as a short-circuit. In the case of a fault, the teach-in process will be
interrupted. If valid teach-in data is already available, this will be used.
Faults are displayed with "F" and a number.
12.1 Error codes
Any faults in the actions and modes are generally encoded in the corre-
sponding return values. If encoding is not possible (because the action has
not yet been completed, for example) the following error codes are avail-
able and are transferred:
Error code
on the display
Possible causes
F001
Error code in the case of a command that is not defined or is only defined as read-only.
F004
Error code the command index 3120hex and sub-index 07hex with the parameter 01hex
(set the configured form) apply, and one of the 5 key code lengths (index 3120hex, sub-in-
dex 01hex to 05hex) is not greater than the permissible tolerance (index 3120hex, sub-in-
dex 06hex).
12.1.1 Faults caused by mounting or teaching-in
Check the individual items according to the following table.
Cause/Item to be checked
Inspection
Troubleshooting
Material is highly glossy.
Check distance and angle of the optical
sensor head.
Tilt optical sensor head more or less.
If necessary, do not use the specified
distance and angle.
→
See Page 22,
The optical sensor head is not installed
at the correct distance.
The optical sensor head does not detect
the printed area correctly. For example,
the mark is not detected or the contrast
is too low.
Check focus and contour of light spot.
Correct distance or angle of optical
sensor head.
→
See Page 22, Chap-
The system's EMC radiated emission is
too high.
The system's EMC radiated emission is
too high; e.g., frequency converter.
• Check wiring.
• Always use screened and twisted
cables for the sensor.
Table 16: Faults caused by mounting or teaching-in
