Rs232 Handshaking; Rs232 Timeout; Xon/Xoff - Honeywell Xenon 1910 User Manual

RS232 Handshaking

RS232 Handshaking allows control of data transmission from the scanner using software commands from the host device.
When RTS/CTS is turned Off, no data flow control is used.
Flow Control, No Timeout: The scanner asserts RTS when it has data to send, and will wait indefinitely for CTS to be
asserted by the host.
Two-Direction Flow Control: The scanner asserts RTS when it is OK for the host to transmit. The host asserts CTS
when it is OK for the device to transmit.
Flow Control with Timeout: The scanner asserts RTS when it has data to send and waits for a delay (see RS232
Timeout on page 2-21) for CTS to be asserted by the host. If the delay time expires and CTS is not asserted, the device
transmit buffer is cleared and scanning may resume. Default = RTS/CTS Off.
Flow Control, No Timeout
Two-Direction Flow Control
Flow Control with Timeout
* RTS/CTS Off

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 timeout by scanning the bar code below, then setting the timeout (from 1-5100 millisec-
onds) by scanning digits from the inside back cover, then scanning Save.
RS232 Timeout

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.
XON/XOFF On
2 - 21