Manual

WI-I/O 9-x Wireless Module User Manual v2.16
WI-I/O-EX-1-S-x Serial Module
Page 76
Appendix A SYSTEM EXAMPLE
The following example of a system is a comprehensive guide to using some of the features of the range
and design of system.
The example application is a pump station which supplies water from a reservoir to a tank station.
Signals are transferred between the pump station and tank station by radio - the distance between the
two stations is 10 km (6 mile), and the radio path is heavily obstructed by buildings and trees. A
control station is located near the pump station, and there is an existing signal cable between the
control station and the pump station.
A WI-I/O 9-1 module is installed at the pump station (with address 1) and a WI-I/O 9-2 module is
installed at the tank station (with address 2). Because the signal cable to the control station does not
have enough cores for all of the signals required, the signal cable is used as a RS485 cable and a WI-
I/O-EX-1-S-x-3 module is installed at the control station (with address 96). As this module has an
address greater than 95, the WI-I/O 9-1 at the pump station will communicate to it via its serial port.
The following diagram represents the system:-
WI-I/O 9-1
#1
WI-I/O 9-2
#2
WI-I/O 9-3
#94