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Interface Connector
Serial Interface
Pin No.
Signal name Direction
1
FG
2
TxD
3
RxD
4
RTS
6
DSR
7
SG
20
DTR
Serial Interface Connection(Example)
Host(DTE ex 8251)
TXD
DSR
RXD
DTR
S.G
Parallel Interface Connector Pin Assignment
Function
-
Frame Ground
Output
Transmit Data
Input
Receive Data
Output
Request To Send
Input
Data Set Ready
-
Signal Ground
Output
Data Terminal Ready
Printer
RXD
DTR
TXD
DSR
S.G
40
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