Pepperl+Fuchs Ex-DRAGON-D101, Техническое руководство, Страница: 50 / 105

Enter configuration exit and save configuration
page 49 EXDragD101_V104_TH_E.doc
Notes on
5.) Number of digits (useful content)
Example 1:
A "2/5 Interleaved" code with 12 digits of useful content must be read:
Enter digits: 1 2 1 2 (
⇒
means from 12 to 12 digits = specification of the number of digits).
Example 2:
A "2/5 Interleaved" code with 12 and 14 digits of useful content must be read:
Enter digits: 1 2 1 4 (
⇒
means from 12 to 14 digits).
The "number of digits" range should be as narrow as possible to reduce the risk of partial reading to a minimum.
Reason: If the "unsafe" code type "2/5 Interleaved" is processed without a check digit and a variable number of
digits is specified (e.g. 4 – 30 digits), the risk of partial reading is very high, i.e. if a barcode to be scanned has
30 digits, the scanner could theoretically read one with one with only four digits.
However, if several different numbers of digits spanning a wide range need to be scanned, each code length
should be separately programmed with a fixed length. The memory locations preassigned to the code families
(5 locations) must be deleted first. The steps for doing so are described in the following and are not the same as
in this programming document (above). The necessary programming codes can be found on the previous
pages.
Special case:
Example 3:
A "2/5 Interleaved" code without a check digit and with 4 and 30 digits of useful content must be read (caution:
risk of partial reading, see above):
1.) Enter configuration
(
⇒
enter programming mode)
2.) Disables all code families
(
⇒
all predefined code families are deleted)
3.) Interleaved 2/5
(
⇒
activates the code type)
4.) No check digit control
(
⇒
code type without a check digit)
5.) Enter digits: 0 4 0 4
(
⇒
means from 4 to 4 digits = specification of the number of digits).
6.) Interleaved 2/5
(
⇒
activates the code type again for a new memory location)
7.) No check digit control
(
⇒
code type without a check digit)
8.) Enter digits: 3 0 3 0
(
⇒
means from 30 to 30 digits = specification of the number of digits).
9.) Exit and save configuration
(
⇒
save the configuration and exit programming mode)
This reduces the risk of partial reading to a minimum. Of course, in theory, it would also be possible to enter
"0 4 3 0" for variable directly, but the risk of partial reading would then be very high!
6.2.9 Advanced Formatting