Fujitsu 50FH5037E-02, M3097E manual 124

		Sequence 1	t1	Sequence 2	Note 1			Sequence 3		t1	Sequence 4
H	S	P S S	P S							S	P S
RXD	T 0 1 0 0 0	0 0 0 B P T 0 0 1 0 1 0 1	0 B P							T	1 1 1 1 1 1 1 1 B P
L	B	B B	B							B	B
H			S	P S		S	P S S	P S S	P S S	P S
TXD			T 1	1 1 1 1 1 1 1 B P		T 0 0 1	0 0 0 0 0 B P T 0 1	1 0 0 0 1 0 B P T 0 0 0 0 0	1 1 1 B P T 1 0 0	0 0 0 0 0 B P
L			B	B		B	B B	B B	B B	B
H
CTS					t2					t2
L
H
RTS
L
H
DTR
L
H
DSR
L

t1: Less than 500 ms

t2: More than 1 byte

Sequence 1: The host computer send the READ command to the scanner.

X`02', `5A'

Sequence 2: ACK for the READ command is sent to the host computer.

X`FF'

Sequence 3: Response for the READ command (read complete) is sent to the scanner.

X`04', `46', `E0', `01'

Sequence 4: ACK for the read complete is sent to the scanner.

Note 1:

Expect issuing read complete, the RTS signal is inhibitory taking low level.

Figure 6.8 Read command sequence