Citizen CTS851IIS3TEWPXX User Manual page 24

CAUTION
 Always unplug the AC adapter from the printer before connecting the
printer to a Powered USB interface. Failure to do so may damage the host
PC. For information about installing a Powered USB interface, contact your
Citizen Systems dealer.
 Check the orientation of the Powered USB cable connector before connecting it. Insert
it straight in so that the pins do not bend. Push it in until it clicks.
 When disconnecting the cable, always hold the connector.
 Be careful not to insert the USB interface cable into the cash drawer kick-out
connector.
 To connect more than one printer to a single computer via a USB interface you must change
the serial number of the USB interface.
 Hold the connector of the Ethernet interface cable perpendicular and straight when
connecting or disconnecting it. Doing it at an angle may cause the connector to
misconnect.
Use a serial interface cable with the connection layout shown below.
25-pin - 25-pin cable
PC
Signal Pin
FG 1
TXD 2
RXD 3
CTS 5
DSR 6
SG 7
DTR 20
CAUTION
Place the interface cable so people do not trip on it.
Printer
Pin Signal
1 FG
2 TXD
3 RXD
4 RTS
6 DSR
7 SG
20 DTR
— 21 —
9-pin - 25-pin cable
PC
Signal Pin
RXD 2
TXD 3
DTR 4
SG 5
DSR 6
CTS 8
Printer
Pin Signal
2 TXD
3 RXD
4 RTS
6 DSR
7 SG
20 DTR