Honeywell Vuquest 3330, Руководство пользователя

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28 Vuquest 3320g User Guide
RS232 Receiver Time-Out
The unit stays awake to receive data until the RS232 Receiver Time-Out expires. A
manual or serial trigger resets the time-out. When an RS232 receiver is sleeping, a
character may be sent to wake up the receiver and reset the time-out. A transac-
tion on the CTS line will also wake up the receiver. The receiver takes 300 millisec-
onds to completely come up. Change the RS232 receiver time-out by scanning the
bar code below, then scanning digits from the inside back cover of this manual,
then scanning Save. The range is 0 to 300 seconds.
Default = 0 seconds (no time-
out - always on).
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 29) 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.
RS232 Receiver Time-Out
Flow Control, No Timeout
Two-Direction Flow Control
Flow Control with Timeout
* RTS/CTS Off