Motorola SYMBOL LS9203 - Manual (Page 113)

RS-232 Interface 6-21
RTS/CTS Option 2
When Option 2 is selected, RTS is always high or low (user-programmed logic level). However, the scanner waits for CTS to be
asserted before transmitting data. If CTS is not asserted within 2 seconds (default), the scanner issues an error indication and discards
the data.
RTS/CTS Option 2
RTS/CTS Option 3
When Option 3 is selected, the scanner asserts RTS prior to any data transmission, regardless of the state of CTS. The scanner waits
up to 2 seconds (default) for CTS to be asserted. If CTS is not asserted during this time, the scanner issues an error indication and
discards the data. The scanner de-asserts RTS when transmission is complete.
RTS/CTS Option 3