Sanyo SRP-270 Interface Connector, Serial Interface RS-232C, Serial Interface RS-485

Interface Connector

Serial Interface (RS-232C)

Pin No.	Signal name	Direction	Function
1	FG	-	Frame Ground
2	TXD	Output	Transmit Data
3	RXD	Input	Receive Data
6	DSR	Input	Data Set Ready
7	SG	-	Signal Ground
20	DTR	Output	Data Terminal Ready

Serial Communication Interface (Example)

Printer	Host(DTE ex 8251)
FG	FG
TXD	TXD
RSD	RSD
DSR	DTR
DTR	DSR
	CTS
	RTS
S.G	S.G

Serial Interface (RS-485)

Pin No.	Signal Name	Direction	Function
1	FGND	-	Frame Ground
2	SD2	Output	Send Data
3	SD1	Output
4	RD2	Input	Receive Data
5	RD1	Input
7	SGND	-	Signal Ground
8	DR2	Output	Same as DTR(RS-232)
9	DR1
10	CS2	Input	Same as DSR(RS-232)
11	CS1

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