3
3
.
.
I
I
n
n
t
t
e
e
r
r
f
f
a
a
c
c
e
e
.
.
3
3
.
.
1
1
.
.
U
U
A
A
R
R
T
T
(
(
R
R
S
S
-
-
2
2
3
3
2
2
C
C
o
o
r
r
T
T
T
T
L
L
)
)
The Porti-SC40N printer has a UART(RS-232C or TTL) interface and is connected
by means of a 4 pin mini USB socket.
In the following table, the signals present on the Mini- USB socket are listed:
Pin No.
Name
Direction
Function
1
TxD
Output
Transmit Data
2
RxD
Input
Receive Data
3
CTS
-
-
4
GND
-
Ground
NOTE :
●
When data receiving, when it removes the communication
cable, it loses a data.