Error Condition

Transfer 1

SCANNER_TX	symbol data
HOST_TX	`NAK' (host rejects)
SCANNER_TX	symbol data (resend data)
HOST_TX	`ACK' (transaction complete)

Transfer 2

HOST_TX	<K141?>
SCANNER_TX	`ACK'
SCANNER_TX	<K141,0>
timeout reached...
timeout reached...
timeout reached...
Timeout Reached	transaction aborted, data is flushed