Xon/Xoff - Symbol LS9203 Product Reference Manual

XON/XOFF

An XOFF character turns the scanner transmission off until the scanner receives an XON character. There are two
situations for XON/XOFF:
•
XOFF is received before the scanner has data to send. When the scanner has data to send, it waits up to 2
seconds for an XON character before transmission. If the XON is not received within this time, the scanner
issues an error indication and discards the data.
•
XOFF is received during a transmission. Data transmission then stops after sending the current byte. When
the scanner receives an XON character, it sends the rest of the data message. The scanner waits indefinitely
for the XON.
XON/XOFF
RS-232 6 - 23