Citizen CT-S251 - 3.2 Connecting Interface Cables

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1. Turn off the power.
2. Orient the interface cable correctly and insert it into the interface connector.
Use a serial cable with the connection layout shown below.
3.2 Connecting Interface Cables
CAUTION
 When disconnecting the cable, always hold the connector.
 Be careful not to insert the USB cable into the cash drawer kick-out connector.
 To connect more than one printer to a single computer by USB, you must change the serial
number of the USB interface.
 Hold the connector of the LAN cable perpendicular and straight when connecting or
disconnecting it. Doing it at an angle may cause the connector to misconnect.
CAUTION
Place the interface cable so people do not trip on it.
Serial Bluetooth + USBUSB
Ethernet+USB
Wireless LAN + LAN
9-pin (female) - 9-pin (female) cable
PC Printer
Signal Pin Pin Signal
RXD 2 2 RXD
TXD 3 3 TXD
DTR 4 4 DTR
SG 5 5 SG
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS