Diagnostics During The "Read" Function - Siemens SIMATIC MV500 Operating Instructions Manual

10.1.7

Diagnostics during the "READ" function

The following table shows possible errors displayed by the "READ" LED during execution of
the "READ" function.
Table 10- 6 Display of operating states
LED Meaning
labeling
READ Green flashing:
The "READ" function is bring executed.
Red, flashing (frequency 0.5 s):
The "READ" function setting was not success-
ful.
SIMATIC MV500
Operating Instructions, 03/2021, C79000-G8976-C494-05
10.1 Error and diagnostics messages
Description and corrective measures
The "READ" function is currently running and the reader is
going through the steps of automatic adaptation.
The "READ" function was not successful. The error is dis-
played for 5 s, the "READ" function is then terminated.
Possible cause:
• The lighting conditions are not sufficient for an automat-
ic adjustment.
• (b) The object to be read does not have sufficient con-
trast to adjust the focus (EF lens).
• (c) The code to be read is not fully in the image.
• (d) The code to be read is neither of the "DMC" type nor
a 1D barcode and the "Fast code type detection" parame-
ter is enabled.
• (e) The source program has unsuitable settings for the
code to be read - e.g. the number of decoder steps, their
ROI or the number of codes to be read.
Solutions:
• (a) Make sure you have suitable lighting.
• (a) Use a built-in ring light with polarization filter to
reduce reflections.
• (b) Make sure that there is an object with sufficient con-
trast in the field of view of the reader, that the object is
sufficiently far away from the reader (at least 30 - 60 cm
depending on the lens) and that the object is sufficiently
illuminated.
• (c) Ensure that the code is located completely in the
reader's ROI.
• (d) Disable the parameter "Fast code type detection".
• (e) Change the source program or select another source
program in the options.
Service and maintenance
235