NCR 7458 User Manual
Page 82
3-58 Chapter 3: Hardware Service
Serial COM1 (CN6)
Pin Signal
Name
1 DCD
2
Serial In - (SIN)
3
Serial Out - (SOUT)
4 DTR-
5 GND
6 DSR-
7 RTS-
8 CTS-
9
RI OR +12V for powered RS-232
Serial COM2 (CN5)
Pin Signal
Name
1 DCD
2
Serial In - (SIN)
3
Serial Out - (SOUT)
4 DTR-
5 GND
6 DSR-
7 RTS-
8 CTS-
9 RI