Denso Power Net Terminal BHT-7500 Spécifications télécharger pdf (Page 152)

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Chapter 8. Files

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■ Specifying Options in the OPEN "BAR:" Statement

You may also specify several options as listed below for each of the bar code types in the

OPEN "BAR:" statement.

■

Bar Code Buffer

The bar code buffer stores the inputted bar code data. It will be occupied by one operator

entry job and can contain up to 40 characters in the BHT-3000 and 99 characters in the

BHT-4000/BHT-5000/BHT-6000/BHT-6500/BHT-7000/BHT-7500.

You can check whether the bar code buffer stores bar code data, by using any of the

EOF,

INP, and LOC functions, and the WAIT statement.

Any of the

INPUT# and LINE INPUT# statements, and the INPUT$ function reads bar

code data stored in the buffer into a string variable.

8.3.2 Programming for Bar Code Device

■ Code Mark

The MARK$ function allows you to check the code type and the length of the inputted bar

code data.

This function returns a total of three bytes: one byte for the code mark (denoting the code

type) and two bytes for the data length.

■

Multiple Code Reading

You may activate the multiple code reading feature which reads more than one bar code

type while automatically identifying them, by designating the desired bar code types follow-

ing the

CODE in the OPEN "BAR:" statement.

Options

- Check digit (only for ITF, Codabar, Code 39, and STF)

- Read data length

- Start/stop character (only for Codabar and STF)

- Start character flag (only for universal product codes)

- Supplemental code (only for universal product codes. Not supported by the BHT-

3000)

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Denso Power Net Terminal BHT-7500 Spécifications Page 152

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