Rs232 handshaking, Rs232 handshaking -21 – Honeywell VOYAGER 1250G User Manual
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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.
Character-Based Flow Control, No Timeout: The scanner asserts RTS
when it has a character 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
on page 2-22) 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.
Character-Based Flow Control with Timeout: The scanner asserts RTS
when it has a character to send and waits for a delay (see
on page 2-22) for CTS to be asserted by the host. If the delay time expires
7 Data, 2 Stop, Parity Space
8 Data, 1 Stop, Parity Space
7 Data, 1 Stop, Parity Mark
7 Data, 2 Stop, Parity Mark
8 Data, 1 Stop Parity Mark