DRAGON™ D151
80
Transfer of Decode Data
The Decode Data Packet Format parameter controls how decode data is sent to the
host. When this parameter is set, the data is sent in a DECODE_DATA packet. When
the parameter is cleared, the data is transmitted as raw ASCII data.
Note:
When decode data is transmitted as raw ASCII data; ACK/NACK handshaking
does not apply regardless of the state of the ACK/NACK handshaking parameter.
ACK/NACK Enabled and Packeted Data
The reader sends a DECODE_DATA message after a successful decode. The
reader waits a programmable timeout for a CMD_ACK response. If it does not
receive the response, the reader tries to send twice more before issuing a host
transmission error. If the reader receives a CMD_NACK from the host, it may attempt
a retry depending on the cause field of the CMD_NACK message.
Reader
Data is
captured
by Reader
Host
(2)
CMD_ACK
message sent
(1)
DECODE_DATA
Summary of Contents for Dragon D151
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