Xerox 4520 User Manual
Page 235
C a b l e S p e c i f i c a t i o n s
A p p e n d i x A : P r i n t e r a n d C a b l e S p e c i f i c a t i o n s
❖
A-9
The interface signals and their associated pin assignments
are identified in the Figure A.4.
Figure A.4
Pin assignment for RS-232C
Signal Name
Pin #
RS-232C
Function
Direction
Chassis GND
1
GND
- - - - - -
Transmitted Data
2
Data
From Printer
Received Data
3
Data
To Printer
Request to Send
4
Control
From Printer
Clear to Send
5
Control
To Printer
Data Set Ready
6
Control
To Printer
Signal GND
7
GND
- - - - - -
Carrier Detect
8
Control
To Printer
N/C
9, 10, 12
- - - - - -
- - - - - -
Send Data Noninverted
11
- - - - - -
- - - - - -
Receive Data Noninverted
13
- - - - - -
- - - - - -
Send Data inverted
14
- - - - - -
- - - - - -
N/C
15, 17 – 19
- - - - - -
- - - - - -
Receive Data Inverted
16
- - - - - -
- - - - - -
Data Terminal Ready
20
Control
From Printer
N/C
21 – 25
- - - - - -
- - - - - -
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