23
Connecting Controller
and Computer
Connection to Computer via RS232
The EverAccess controller is able to operate as a stand-alone device or as a
networked device, connected directly to a PC via serial port.
EverAccess
ARM
EN T
0
CLR
WXYZ
T U V
P QR S
M N O
J K L
G H I
3
D E F
A B C
2
1
4
5
6
9
8
7
SY S
Figure 3.1 Connecting the Controller to a PC
To connect the controller to the computer via RS232, the communication terminals
should be wired to the computer serial port as follows: the RS232 TX terminal of the
controller is linked to the RS232 RX of the serial port and the RS232 RX terminal is
linked to the TX.
If the controller is installed in the EverAccess enclosure, the DB9 serial port interface
makes the connection even easier. Fig. 3.2 describes how to connect the DB9 port to
the computer serial port. If a self-made cable and interface is used for connection,
then a DB9 female connector is required. The terminal 12, 13 and 14 on the main
module should be linked to the pin 5, 3 and 2 respectively, which are GND, TXD
and RX.D
Chapter
3
RS232
Summary of Contents for EFC-02-1A
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