N3680 Decoded Engine User Guide 27
ACK/NAK
After transmitting data, the scan engine waits for an ACK character (hex 06) or a
NAK character (hex 15) response from the host. If ACK is received, the communica-
tions cycle is completed and the scan engine looks for more bar codes. If NAK is
received, the last set of bar code data is retransmitted and the scan engine waits
for ACK/NAK again. Turn on the ACK/NAK protocol by scanning the ACK/NAK On
bar code below. To turn off the protocol, scan ACK/NAK Off. Default = ACK/NAK
Off.
RS232 Stop Mode
Scan the following bar code to force the engine into a stop mode. Restart the
engine by using a trigger pull, nWake, or RxD toggle.
Scanner to Bioptic Communication
The following settings are used to set up communication between Honeywell scan
engines and bioptic scanners.
Note: The scan engine’s baud rate must be set to 38400 and the RS232 timeout must be
set to 3000 in order to communicate with a bioptic scanner. See "RS232 Baud
Rate" on page 23, and RS232 Timeout on page 26 for further information.
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