Fujitsu 50FH5037E-02, M3097E manual 118

			Sequence 1		Sequence 2		Sequence 3		Sequence 4
H					t1
	S	P S S	P S S	P S				S	P S
RXD	T 1	1 0 0 0 0 0 0 B P T 0	0 1 0 0 0 1 0 B P T 0 0 0 0 0 0 0	0 B P				T 1 1	1 1 1 1 1 1 B P
L	B	B B	B B	B				B	B
				t2				t2
H				S	P S	S	P S S	P S
TXD				T 1	1 1 1 1 1 1 1 B P	T 0 1 0 0	0 0 0 0 B P T 0 1 0 0	1 0 1 0 B P
L				B	B	B	B B	B
H
CTS						t3
L
H
RTS								t3
L						Note 1
H
DTR
L
H
DSR
L

t1: more than 1 word length (changed by data transfer rate)

t2: less than 500 ms

t3: less than 5 s

Sequence 1: The host computer sends the CLEAR command to the scanner.

X`03', `44', `00'

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

X`FF'

Sequence 3: Response for the CLEAR command is sent to the host computer.

X`02', `52'

Sequence 4: ACK for the response (issued at Sequence 3) is sent to the scanner.

X`FF'

Note 1:

During the CLEAR command execution, DTR signal takes low level.

Figure 6.5 Clear command sequence