Rs232 Timeout; Xon/Xoff; Ack/Nak - Honeywell Xenon Series User Manual

Area-imaging scanners
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RS232 Timeout

When using Flow Control with Timeout, you must program the length of the delay
you want to wait for CTS from the host. Set the length (in milliseconds) for a time-
out by scanning the bar code below, then setting the timeout (from 1-5100 milli-
seconds) by scanning digits from the
then scanning Save.

XON/XOFF

Standard ASCII control characters can be used to tell the scanner to start sending
data (XON/XOFF On) or to stop sending data (XON/XOFF Off). When the host
sends the XOFF character (DC3, hex 13) to the scanner, data transmission stops.
To resume transmission, the host sends the XON character (DC1, hex 11). Data
transmission continues where it left off when XOFF was sent. Default = XON/XOFF
Off.

ACK/NAK

After transmitting data, the scanner waits for an ACK character (hex 06) or a NAK
character (hex 15) response from the host. If ACK is received, the communications
cycle is completed and the scanner looks for more bar codes. If NAK is received, the
40
Flow Control with Timeout
XON/XOFF On
Programming Chart,
RS232 Timeout
Xenon/Granit User Guide
Two-Direction Flow Control
* RTS/CTS Off
beginning on page 353,
* XON/XOFF Off

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