Denso AT21B-SM Manual do Utilizador descarregar pdf (Página 49)

 Communication protocols

You can select either no protocol mode or ACK/NAK mode.

No protocol mode (default)

If the CTS signal is at a high level (Enable transmission), the scanner transmits barcode data read.

Note: The configuration software (Scanner Setting) provides CTS timeout settings from 100 ms to

9.9 s in 100-ms increments and two CTS signal control choices “controlled” and “not controlled.”

ACK / NAK mode

If the CTS signal is at high level (Enable transmission), the scanner transmits barcode data read. After that, the

scanner waits for and then processes a response. If the response is an ACK, the scanner normally ends the

transmission; if it is a NAK, the scanner transmits the barcode data again.

Note: The configuration software (Scanner Setting) provides CTS timeout and ACK/NAK response settings

each from 100 ms to 9.9 s in 100-ms increments.

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Denso AT21B-SM Manual do Utilizador Página 49