Cable and Ethernet Specifications
B-3
Male-to-Male Straight-Through RS-232 Cable
Male-to-Male Straight-Through RS-232 Cable
Table B-2 gives pinout information for a male-to-male straight-through RS-232 cable.
Pins not listed have no connection.
Table B-2
Straight-through Cable Pinout
PortMaster
Serial Port (C0)
Terminal
Serial Port
DB-25
(DTE)
Signal
Definition
Direction to
or from the
PortMaster
DB-25
(DCE)
Pin
DB-9
(DCE)
Pin
Signal
2
TXD
Transmit Data
Output
2
3
TXD
3
RXD
Receive Data
Input
3
2
RXD
4
RTS
Request to Send
Output
4
7
RTS
5
CTS
Clear to Send
Input
5
8
CTS
6
DSR
Data Set Ready
6
6
DSR
7
GND
Signal Ground
7
5
GND
8
DCD
Data Carrier Detect
Input
8
1
DCD
20
DTR
Data Terminal
Ready
Output
20
4
DTR
Summary of Contents for PortMaster PM-2
Page 4: ......
Page 8: ...Contents viii Communications Server Hardware Installation Guide...
Page 38: ...Set the Network Address 2 18 Communications Server Hardware Installation Guide...
Page 50: ...Removing PortMaster Expansion Boards 3 12 Communications Server Hardware Installation Guide...
Page 84: ...Ordering Instructions D 8 Communications Server Hardware Installation Guide...
Page 88: ...Index Index 4 Communications Server Hardware Installation Guide...