PSC DUET Manual de usuario Pagina 37

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R44-2006 33
RS-232 COMMUNICATION MODE
RS-232 PROTOCOLS
Xon/Xoff – Software flow control. The Host
System can control the data flow coming
from the scanner. Xon (11hex) – host
ready to receive data, Xoff (13 hex) – host
is busy.
ACK/NAK – Software flow control. The
scanner waits for acknowledgement from
the host. Ack (06 hex) – host received data
correctly. Nak (15 hex) – scanner resends
data when NAK is received.
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