Table of Contents
Advertisement
LS 6000i Series Product Reference Guide
Software Handshaking (Cont'd)
ACK/NAK
When this option is selected, after transmitting data, the
scanner expects either an ACK or NAK response from
the host. Whenever a NAK is received, the scanner
transmits the same data again and waits for either an
ACK or NAK. After three unsuccessful attempts to send
data when NAKs are received, the scanner issues an
error indication and discards the data.
The scanner waits up to the programmable Host Serial
Response Time-out to receive an ACK or NAK. If the
scanner does not get a response in this time, it issues an
error indication and discards the data. There are no
retries when a time-out occurs.
ACK/NAK
5-32
Advertisement
Table of Contents
