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E.1 Interface Connector
Serial Interface (RS-232)
Pin No. Signal name Direction Function
1 FG - Frame Ground
2 TxD Output Transmit Data
3 RxD Input Receive Data
4 RTS Output Request To Send
6 DSR Input Data Set Ready
7 SG - Signal Ground
20 DTR Output Data Terminal Ready
Host side
(DSUB9
FEMALE)
15m
3(RXD)
4(RTS)
6(DSR)
5(CTS)
2(TXD)
PCB
20(DTR)
7(S.GND)
8(CTS)
5(S.GND)
3(TXD)
4(DTR)
7(RTS)
6(DSR)
2(RXD)
( INTERFACE CABLE PIN CONNECTION )
Printer
side
(DSUB25
MALE)