Denso BHT-200QW Especificações descarregar pdf (Página 104)

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Split/merge

mode

E Enables compound code reading in edit mode.

B Enables compound code reading in batch edit mode.

C Enables compound code reading in non-edit mode.

The mode specified last will be valid if multiple modes are specified.

It is not possible to read split QR code symbols without specifying a split/merge mode.

[Ex.] To enable the BHT to read compound codes:

RdType = " Q:M5-14E;L1-40;S1-4"

When reading a compound code in edit mode, the maximum data length is 8,192 bytes. If the data

exceeds 8,192 bytes, a read error will occur, the beeper will sound for 1 sec, and the read data will be

destroyed.

When a compound code is read in non-edit mode, the read data is stored in the barcode buffer in the

following format:

Sub-code no

Number of sub-codes Parity Read data

Sub-code no., No. of sub-codes: 1 byte (hex.) (0 – F)

Parity: 2 bytes (hex.) (00 − FF)

The sub-code number, number of sub-codes, and parity are converted into hexadecimal

characters.

The sub-code number is expressed in hexadecimal notation; for example, 0 (30h) for the

first, and F (46h) for the 16

. Likewise, the number of sub-codes is expressed in

hexadecimal notation; for example, 1 (31h) when splitting into 2 divisions, and F (46h) when

splitting into 16 divisions.

The parity is provided for sum checking of the read data. It also serves as a delimiter between that

sub-code and another sub-code.

When reading a compound code, the beeper sounds as follows: Upon reading the first

sub-code of a compound code, it beeps twice, signaling the start of compound code reading

mode. Thereafter, the beeper sounds once each time a sub-code is read, except the last

one, for which the beeper sounds three times, signaling the end of compound code reading

mode.

All split sub-codes within a compound code must be read, regardless of the read order. Once read, a

split sub-code cannot be read again until all other split sub-codes within the compound code have been

read.

In any of the following events, compound code reading will be terminated, even if reading of the entire

compound code is not complete. If reading is terminated in this manner when in edit mode, all data

read up to that point will be deleted.

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Denso BHT-200QW Especificações Página 104