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Figure 6.6 Control command sequence (1/4)
S
T
B
H
L
RXD
H
L
TXD
H
L
CTS
H
L
RTS
H
L
DTR
H
L
DSR
Sequence 1 t
1
Sequence 2
0 1100000
P
B
S
P
B
S
T
B
000
11010
P
B
S
P
B
S
T
B
00000000
P
B
S
P
B
S
T
B
000
10101
P
B
S
P
B
S
T
B
00
1100 0
P
B
S
P
B
S
T
B
000
1 10000
P
B
S
P
B
S
T
B
11111111
P
B
S
P
B
t
1
: Less than 500 ms
t
2
: More than 1 word length
Sequence 1: The host computer sends the CONTROL command to the scanner.
X`06', `58', `00', `A8', `4C', `08'
Sequence 2: ACK for the CONTROL command is sent to the host computer.
X`FF'