2. INTERFACES
FH190SP
1
2-
S E R IA L / PA R A L LE L IN T E R FA C E
S E T T IN G J U M P E R
JP 2
S E L E C T IO N JU M P E R
S E T T IN G E N A B LE F R O M
F R O N T K E Y S
J 4
C O N N E C TO R F O R
E X T E R N A L P R IN T
K E Y
P O W E R S U P P LY
C O N N E C TO R
C O N N E C TO R F O R
E X T E R N A L W IN D E R
J 2
J 6
J 5
C O M M U N IC AT IO N IN T E R FA C E C O N N E C TO R
CE
NT
RONI
CS
2
R
S
232
3
1
The selection of the RS232 or CENTRONICS interface is made through a
20 contact strip:
when the strip is placed in position 1-2 (fig.2.1) the Centronics standard
interface is selected; when, on the other hand, the strip is placed in position
2-3 the RS232 serial interface is selected.
2.1 RS232 SERIAL
The printer has an RS232 serial interface and is connected by means of a
25-pin female rectangular connector. In the serial protocol, the signals which
distinguish the communication are TXD, RXD, and RTS if the RTS/CTS
protocol has been selected while, if the XON/XOFF protocol has been
selected, the signals are TXD and RXD.
In the following table, the signals present on the connector are listed:
(Fig.2.1)
N
I
P N
I
P N
I
P N
I
P N
I
P
L
A
N
G
I
S
L
A
N
G
I
S
L
A
N
G
I
S
L
A
N
G
I
S
L
A
N
G
I
S
N
O
I
T
C
E
R
I
D
N
O
I
T
C
E
R
I
D
N
O
I
T
C
E
R
I
D
N
O
I
T
C
E
R
I
D
N
O
I
T
C
E
R
I
D
N
O
I
T
P
I
R
C
S
E
D
N
O
I
T
P
I
R
C
S
E
D
N
O
I
T
P
I
R
C
S
E
D
N
O
I
T
P
I
R
C
S
E
D
N
O
I
T
P
I
R
C
S
E
D
1
1
1
1
1
C
N
-
2
2
2
2
2
D
X
T
t
u
p
t
u
O
n
o
i
s
s
i
m
s
n
a
r
t
a
t
a
D
3
3
3
3
3
D
X
R
t
u
p
n
I
n
o
i
t
p
e
c
e
r
a
t
a
D
4
4
4
4
4
S
T
R
t
u
p
t
u
O
l
a
n
g
i
s
R
T
D
s
a
e
m
a
S
7
7
7
7
7
G
S
-
l
a
n
g
i
S
d
n
u
o
r
G