Worth Data 520-RF, Руководство пользователя

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Note: If you are using the 2D 520-RF then refer to the 2D setup chart starting on page 24.
Terminator characters
Enter (carriage return) 0
None 1
HT 2
CR/LF 3
Depending on your application, you may wish your Wireless Reader to transmit bar code data to your
computer with an
Enter (carriage return), a Tab at the end, or with no extra terminating character at all.
If you need a terminator character other than
CR or HT or CR/LF , you can get it by specifying None here and
then selecting your desired terminator character(s) specified in the Postamble .
Preamble
A "Preamble" is a user-specified data string transmitted at the beginning of each bar code. For example, if you specify
the preamble
@@ and read data of 123456 , " @@123456 " would be transmitted to your computer. The Preamble
applies to the scanner, not the base station because there may be multiple scanners per base.
The default is no preamble. To select a preamble, scan up to 15 characters from the "FULL ASCII MENU" on the back of
the
Reader Setup Menu , and then scan SET when you're done. To return to the no preamble setting, scan Clear here
instead of scanning SET or any characters from the FULL ASCII MENU.
You can trim 1-15 leading characters from bar code codes by scanning a ~ (tilde -- ASCII 126) followed by a single
digit, 1 through F, as part of the Preamble. (Bar codes that are shorter than the amount-to-trim are transmitted with no
trimming.) Consider the examples in the following table to understand how trimming works:
Bar Code Data Preamble Data Transmitted
123 XYZ XYZ123
12345678 ~3XYZ XYZ45678
12345678 ~9 12345678
12345 ~A 12345
123456 ~5 6
You can also trim selectively by bar code type. For example, you can trim 2 characters from Code 39 and a different amount
from other bar code outputs. This is done by using the bar code ID character in conjunction with the tilde (~). A preamble of
~b2~c1 says trim 2 characters from the front of Code 39 output and trim 1 character from the front of UPC-A. Refer to the
Code 128 parameter on page 13 for a list of the ID character associated with each bar code type.
A final use of the Preamble/Postamble is to enter a minimum/maximum length check for bar code data read. Use the
Preamble or Postamble by entering |
nnmm where "|" is ASCII 124, " nn " is the two digit minimum to be read and " mm "
is the two digit maximum to be read.