Using Interface Cable; 6 Using Interface Cable- Page 26

STEP1 Before using the printer

26

RS-232C cable is not a standard accessory.
Choose the appropriate cable for your interface.

•

USB cable
Use the enclosed interface cable.

•

RS-232C cable
The pin assignments for the serial cables (RS-232C cables) which can be used with this 

machine are shown in the table below. You can purchase the cables at an electronics 

store. Do not use an interface cable that is longer than 2 metres.

Brother QL side

PC side

D-sub female, lock screw #4-40 (UNC).

(D-Sub9P female)

•

It is not possible to connect a RS-232C cable and USB cable to the printer at the 
same time.

•

The RS-232C serial connector part of this equipment is not Limited Power Source.

6 Using Interface Cable

Signal 

Name

Pin 

Number

Pin Assignments

Pin 

Number

Signal 

Name

DCD

1

1

DCD

RXD

2

2

RXD

TXD

3

3

TXD

DTR

4

4

DTR

GND

5

5

GND

DSR

6

6

DSR

RTS

7

7

RTS

CTS

8

8

CTS

RI

9

9

RI