Macintosh Communication Port to Printer

Normally, the Macintosh comes with a 9-pin male connector.

Table 6-7. Macintosh Communication Port to Printer Connector Wiring

Macintosh

 

 

 

 

 

Printer

Signal

DCE

 

 

 

DTE

Signal

 

 

 

 

 

 

 

FG

1

 

 

1

FG

 

 

 

2

2

TD

SG

3

3

RD

 

4

 

 

4

RTS

 

 

TD

5

 

 

5

CTS

 

 

 

6

6

------

DSR

7

7

SG

 

8

8

DCD

RD

9

20

DTR

 

 

 

 

 

 

 

RS-422 Host interface

The RS-422 host interface uses the signal definitions defined below. A shielded cable is required with the shield connected on one end only, preferably at the printer end.

Table 6-8. RS-422 Host Interface Connector Wiring

Host

 

 

 

 

Printer

Signal

 

 

 

 

Signal

 

 

 

 

 

 

GND

1

 

 

1

FG

 

SG

8

 

 

8

SG

 

 

TD

2

 

2

TD

 

 

 

 

9

 

9

 

 

 

RD

4

 

4

RD

 

 

 

 

11

 

11

 

 

 

DCD

5

 

5

DCD

 

 

 

 

12

 

12

 

 

 

ST2

6

 

6

ST2

 

 

 

 

13

 

13

 

 

 

ST1

7

 

7

ST1

 

 

 

 

14

 

14

 

 

 

DTR

3

 

3

DTR

 

 

 

 

10

 

10

 

 

 

6-26

Wiring Diagrams and Electrical Data