RS-232 Serial Interface Connector Pin Assignment
PIN
1
2
3
*4
*5
*6
7
*8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
* These signals are available only when the Modem Control feature is enabled.
SIGNAL NAME
Frame Ground
Transmitted Data
Received Data
Request to send
Clear to Send
Data Set Ready
Signal Ground
Data Carrier Detects
No Connect
No Connect
Data Terminal Ready
No Connect
No Connect
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Data Terminal Ready
No Connect
No Connect
No Connect
No Connect
No Connect
User's Guide
SIGNAL
DIRECTION
Out
In
Out
In
In
In
Out
Out
Interface Specifications B-11