Keyscan Inc. – Technical Guide (PC109x - 04.15)
Configure a 9-pin RS-232 Data Cable
In the event that you are establishing a serial connection from the PC either to the control board or a
communication board and you have to make a 9 pin, RS-232, data cable, ensure that you follow the pin to
wire colour assignments on the following diagram. When possible, use a Keyscan 9 pin, RS-232 data cable
(Keyscan part # 40-2322) which is manufactured specifically for Keyscan serial data connectivity.
Figure 41 – RS-232 Data Cable Connections
Installation Notes
Typically, the black wire of the RS-232 cable from the PC, which is the receive data input of the PC, is
connected to the serial port TD pin of most Keyscan products.
Typically, the red wire of the RS-232 cable, which is the transmit data output of the PC, is connected to
the RD pin of most Keyscan products.
Exceptions - NETCOMs
When connecting the following NETCOM devices – NETCOM2 or NETCOM6 – reverse the black and red
wires as shown on the NETCOM wiring diagrams. Please observe the following connections:
The black wire of the RS-232 cable connects to the RD terminal.
The red wire of the RS-232 cable connects to the TD terminal.
If during communication troubleshooting you remove the terminal block if it is wired for a NETCOM, as
listed above, and attach it to the communication port of the control board, or vise versa, system
communication will fail.
- Shield
1 - White
2 - Black
3 - Red
4 - Brown
5 - Green
6 - shorted to pin 7
7 - shorted to pin 6
8 - not connected
9 - not connected
DB9 Connector
(Front View)
1
2
3
4
5
6
7
8
9
KI-00152E-07-11
To Next Page
Loading...
Need help?
General
