Opticon
OPV 1001
Specifications Manual
21
d) ACK/NAK
After data has been transmitted, the scanner expects to receive one of the
following responses from the host:
ACK
response—Action: The scanner completes transmission with the
good-read buzzer and returns to the initial state.
NAK
response—Action: The scanner sends the data again and waits for
the response from the host.
DC1
response—Action: The scanner returns to waiting for the trigger, if it
has a trigger (the initial state).
None
response—Action: The scanner sounds the error buzzer and returns
to the initial state.
ACK/NAK timeout can be set as follows using the menu or commands.
•
I4: Indefinitely (default)
•
I5: 100 ms
•
I6: 500 ms
•
I7: 1000 ms
Figure 15: Handshaking: ACK/NAK