KEYENCE BL-700 Series - Manual (Page 151)

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Appendices
Appendices
Appendix I CODE128 Specifications
■ Setting No. of Digits
•
The start/stop character and check digit are not included in the number of digits.
• FNC1 to 4 (Function codes), SHIFT, and CODE-A to -C should not be added to
the number of digits.
• The number of digits setting range varies depending on the start character
(CODE-A to -C).
CODE-A, B: 1 to 32
CODE-C: 2 to 64
One digit of CODE-A or CODE-B represents two digits of CODE-C.
■ Data Transmission
•
The start/stop character and check digit cannot be sent.
• FNC1 to 4 (Function codes), SHIFT, and CODE-A to -C cannot be sent.
• Control codes are sent.
Note: Do not use CODE128 with control codes when you build a multidrop link.
Communication errors may occur.
■ Registration of Preset Data
•
The number of characters that can be registered as preset data is up to 32
digits for CODE-A or CODE-B, and up to 64 digits for CODE-C, as described
above.
• When ! or ? is registered as preset data, it functions as the Preset “!” “?” Func-
tion, as described on page 18.
Since CODE128 can represent all ASCII codes as bar code data, ! or ? can also
be represented as bar code data.
To register ! or ? as preset data, send \! or \? to differentiate it from the Preset
“!” “?” function.
To register \ as preset data, send \\.
Example
To register 123 \!?ABC as preset data, send the following command.
➮ See P.102.
WP68123 \\\!\?ABC <CR>
• Control codes (data in 00h to 2Fh of the ASCII code table, such as <CR> and
<STX>), start/stop character, check digit, FNC1 to 4 (function codes), SHIFT or
CODE-A to-C cannot be registered as preset data. (Data comparison is also
impossible.)