21
ACK/NAK mode
Start
Beeps when the QS20P-A
has read a code.
Initializes the timer.
CTS High?
No
Yes
Transfers a single
character.
2 seconds elapsed?
Transfers the
last character?
Beeps if an error occurs.
(No transmission possible)
Initializes the timer.
End
Any response
received?
ACK or NAK?
One second
elapsed?
NAK
(for trans-
mission
again)
ACK
(normal end)
Beeps if an error occurs.
(No response signal received)
End
End
No
Yes
No
Yes
No
Yes
No
Yes
* You may enable or disable the
beeper and the CTS control by
using the QR-coded parameter
menu given in Chapter 7.
*
*
Summary of Contents for QS20P-A
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