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17
3
3
.
.
I
I
n
n
t
t
e
e
r
r
f
f
a
a
c
c
e
e
3
3
.
.
1
1
.
.
R
R
S
S
-
-
2
2
3
3
2
2
C
C
The PORTI-SW40
printer has a RS-232C 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:
* Applicable connector : SUNG KYUNG (CM-720)
Pin No.
Name
Direction
Function
1
TxD
Output
Transmit Data
2
RxD
Input
Receive Data
3
CTX
-
-
4
GND
-
Ground
NOTE :
Ɣ
When data receiving, when it removes the communication
cable, it loses a data.
