2-4. Interface Connections
2/99
2-19
U3-1021
Westinghouse Proprietary Class 2C
Table 2-4. Pin Assignments for J2 Applications Port RS-232 Interface
Pin Number
Signal Name (Function)
Signal Direction
1
DCD (Data Carrier Detect)
Input
2
RX/ (Receive Data)
Input
3
TX/ (Transmit Data)
Output
4
DTR (Data Terminal Ready)
Output
5
Com (Isolated Common)
6
DSR (Data Set Ready)
Input
7
RTS (Request to Send)
Output
8
CTS (Clear to Send)
Input
9
RI (Ring Indicator)
Input
Top View of J2 Connector
1
6
5
9
