IBM 4247

Attachment Connectors
Table 40. RS-232C Connector Pin Assignments
Pin Signal Name Description
2 TXD Transmit Data
3 RXD Receive Data
4 RTS Request to Send
5 CTS Clear to Send
6 DSR Data Set Ready
7 SG Signal Ground
20 DTR Data Terminal Ready
Figure 37. Stacker Cable Wiring
Chapter 3. Circuit Diagrams 262