Citizen CT-S851 Manual De Usuario página 25

3.2 Serial Interface Board
Data can be exchanged by serial communication.
Connecting the Interface Cable
1. Turn off the power.
2. Orient the cable correctly and insert it into the connector.
3. Insert the other connector firmly into the interface port of the host computer.
CAUTION
 When disconnecting the cable, always hold the connector.
 Place the interface cable so people do not trip on it.
 Do not connect multiple interfaces at the same time.
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
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