Setup 2

RES	0x00 (disabled)
REQ	0x00 (disabled)
STX	0x00 (disabled)
ETX	0x00 (disabled)
ACK	0x06
NAK	0x15
LRC	enabled

Transfer 1

HOST_TX	<K141,0>a
SCANNER_TX	`ACK'

Transfer 2

HOST_TX	<K141?>B
SCANNER_TX	`ACK'
SCANNER_TX	<K141,0>a
HOST_TX	`ACK'