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Rev. 1.05
- 27 -
SRP-270
6-2 RS-232C (Serial Interface) Cable Specifications
1) Printer Rear Image
※ Turning the dip switch on the Serial interface to the ON position connects DTR and
RTS signals together.
2) Cable Specifications
(Shield.G)
(S.GND) (S.GND) (S.GND) (S.GND)
(Shield.G) (Shield.G) (Shield.G)
Pin No. Signal Direction Function
1 FG - Frame Ground
2 TxD Output Transmit Data
3 RxD Input Receive Data
4 RTS Output Ready To Send
5 CTS Input Clear To Send
6 DSR Input Data Set Ready
7 SG - Signal Ground
20 DTR Output Data Terminal Ready
Printer Side
(25P)
Host Side
(25P)
Printer Side
(25P)
Host Side
(9P)
Cash Drawer
Connector
Serial Interface
Power Connector