Male-to-Male Null Modem Cable
B-2 Communications Server Hardware Installation Guide
Male-to-Male Null Modem Cable
Table B-1 gives pinout information for a DB-25 serial male-to-male null modem cable.
Pins not listed have no connection.
Ta b l e B - 1 Male-to-Male Null Modem Cable Pinout
PortMaster
Serial Port (C0)
Ter m i n al
Serial Port
DB-25
(DTE) Signal Definition
Direction to
or from the
PortMaster
DB-25
(DTE)
Pin
DB-9
(DTE)
Pin Signal
2 TXD Transmit Data Output 3 2 RXD
3RXDReceive Data Input 23TXD
4 RTS Request to Send Output 5 8 CTS
5 CTS Clear to Send Input 4 7 RTS
6, 8 DCD Data Carrier Detect Input 20 4 DTR
7 GND Signal Ground 7 5 GND
20 DTR Data Terminal
Ready
Output 6, 8 6, 1 DCD
To Next Page
Loading...
Need help?
General