
Porti-SP Rev. 2.0
http://www.woosim.com
2010-02-03
16
3
3
.
.
I
I
n
n
t
t
e
e
r
r
f
f
a
a
c
c
e
e
3.1. Serial Interface
The Porti-SP(20 and 30) printer has an UART(RS-232C or TTL) serial interface and power
connector is connected by 4 pin female connector.
In the following table, the signals present on the connector are listed:
Pin no Signal name Direction
Function
1
INPUT
-
5VDC/2.5A
2
TxD
Output
Transmit Data
3
RxD
Input
Receive Data
4
GND
-
Ground
<CN2 : MOLEX (53014-0410)>
Applicable connector : MOLEX 51004-0410 or equivalent.
WARNING
A wrong connection of power supply connector could be damage the printer