Comtrol Cable - Manual (Page 22)

22 [Documentation number: 2000430 Rev B] Building Cables for DeviceMaster Products
RS-232 and RS-485 Straight-Through Cable for DeviceMaster AIR, PRO, RTS or UP
RS-232 and RS-485
Straight-Through
Cable for
DeviceMaster AIR,
PRO, RTS or UP The following image displays the pinouts for an RS-232 or RS-485 straight-
through cable.
RJ45 Serial Cables and Loopback Plugs
This section describe how to build your own null-modem or straight-through RJ45
serial cables and loopback plugs.
The following DeviceMaster models support RJ45 connectors:
• DeviceMaster PRO
• DeviceMaster RTS
• DeviceMaster UP
RJ45 Pinouts The following figure illustrates the RJ45 connector signals.
De
vic
eMa
s
te
r
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRx-
DTR
GND
CTS
DSR
RTS or TRx+
Signal
DB9
1
2
3
4
5
8
6
7
Pins
DCD
RxD
TxD or TRx-
DTR
GND
CTS
DSR
RTS or TRx+
Signal
Fe
m
a
le
RI 9 9 RI
RJ45
6
5
4
2
3
8
7
1
Pins
N/A
DB25
8
3
2
20
7
5
6
4
Pins
22
Pin 1