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

Signal DCE

FG 1

2

SG 3

4

TD 5

6

DSR 7

8

RD 9

Printer

DTE Signal

1FG

2TD

3RD

4RTS

5CTS

6------

7SG

8DCD

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

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Image 330
HP C30 Macintosh Communication Port to Printer, RS-422 Host interface, RS-422 Host Interface Connector Wiring Printer