Installation 2
2 - 3
Designing the network
In order for the I/O PLEXER to share its data with the Host computer, it must be
linked via a serial connection. This link can be hard-wired using an RS-232 link
(less than 50 Ft), or an RS-422/ 485 twisted pair connection where the wire run
between devices is less than 5000 Feet. In situations where distances are greater
than 5000 feet or circumstances do not allow additional wire to be installed; RS-
232 Radio or telephone modems may be used. In any event, the appropriate
transmitter of the I/O PLEXER will be connected to a suitable receiver of the
Host computer as shown in figure 2-3
Figure 2-3 Typical installation
Multiple I/O PLEXER Master chassis can be networked together to service large
numbers of I/O Points.
Serial
Link
I/O P
LEXER
Outputs
Inputs
Strip Chart
Temperature
Lamp
Meter
Level Switch
Alarm
Dial
HOST
P.C.
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