Siemens SIMATIC MV420, Operating Instructions Manual

Page: 143 / 424

Commissioning
8.3 Establishing a connection to the reader and starting the user interface
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06
141
1. Position the reader so that the code to be read appears in the center of the image and is
focused sharply.
The reader automatically attempts to recognize and decode a data matrix code. You can
recognize a successful read by the green frame around the code. The more precise the
triggering and greater the contrast in the code, the greater the read reliability.
2. If necessary, correct the settings on this page:
–
Exposure settings
– If, for example, you wish to read an EAN13 code rather than a data matrix code, press
the "Recognize code type" button. The reader will launch code type recognition and
remember the code type it finds for subsequent reads.
– Correct the trigger settings to find the correct image acquisition time for moving
objects.
– Adjust distortion correction to correct significant distortion by the lens (only rarely
necessary!).
Note
If exposure = Auto, the code must be completely in the image after the triggering until
the automatic exposure is completed (approximate value: 50 to 100 ms).
3. If you make modifications, save your new settings by clicking the "Apply" button.
Result
You have successfully commissioned the reader. You can now read codes for your
application. You can now make specific settings and save them to individual programs.
For detailed information on saving programs and processing, please see Operator control
and monitoring (Page 157).