Rev. 1.06
- 11 -
STP-131
2-2-1 STP-131S Serial Interface
Pin No. Signal name Direction Function
FG. - Frame Ground
20 TxD Output Transmit Data
19 RxD Input Receive Data
21 CTS Input Clear To Send
22 SG - Signal Ground
18 RTS Output Request To Send
PRINTER HOST
20 TXD(O)
---------------------
2 RXD(I)
19 RXD(I)
---------------------
3 TXD(O)
18 RTS(O)
---------------------
8 CTS(I)
21 CTS(I)
---------------------
7 RTS(O)
22~25 FG,SG (GND)
---------------------
5 FG,SG (GND)
4
DTR(O)
6
DSR(I)
CONNECT
