REFERENCES
5
5 REFERENCES
5.1 RS232 – USB COM
5.1.1 ACK/NACK
Protocol
The transmission protocol takes place between reader, cradle and Host. The reader
passes its data (code read) to the cradle which sends it to the Host. The
management of responses (from Host or cradle) depends on the Transmission Mode
parameter, see par. 5.6.3.
In the following descriptions the completed transmission is indicated by the Beeper
Control for Radio Response parameter with its default setting to “Good Decode and
Good Reception” beep, see par. 5.6.2.
When ACK/NACK is disabled (in One-Way tx mode), there is no control from cradle
to Host transmission, the reader responds with the good reception tone.
OM-1000 BT
Host
data
cable
Lynx
™
BT
data
Transmission Mode = One-Way
good RX
beep
ACK/NACK Disabled
OM-1000 BT
Host
data
cable
Lynx
™
BT
data
NACK
ACK
good RX
beep
Transmission Mode = Two-Ways
data
ACK/NACK Enabled
When ACK/NACK is enabled (in Two-Way tx mode), the Host sends an ACK
character (06 HEX) in the case of good reception or the NACK character (15 HEX)
requesting re-transmission, in the case of bad reception. Only after the ACK
character is received by the OM-1000 BT does the reader respond with the good
reception tone.
129
Содержание lynx bt
Страница 1: ...Lynx BT Reference Manual...
Страница 2: ......
Страница 3: ...Lynx BT REFERENCE MANUAL...
Страница 12: ...GENERAL VIEW LYNX BT OM 1000 BT Radio Connection est Button Status LEDs T x...
Страница 20: ...xviii...
Страница 160: ...LYNX BT 6 Code 39 Normal 1 7 1 6 2 Code 39 Full ASCII a b Codabar A 8 0 0 5 4 7 2 5 0 7 B Code 128 t e s t 140...
Страница 200: ...AUTOSCAN PATTERN CODE s...