Kantronics MT1200, User Manual

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You can also use the ANALOG, IO, and/or CTRL commands, from your local terminal,
to carry out sensing and control functions at a local Kantronics TNC.
The following diagram illustrates the use of two Kantronics TNC/radio stations for
remote control and sensing. These operations could be carried out manually or via a
terminal program running in the computer in the central TNC station.
Remote Sensing and Control
Example: controlling the level of liquid in a tank
As noted earlier, the Command Reference section and the ADVANCED
INSTALLATION section provide details needed to adapt these broad capacities to your
own situation, with your own sensors, controls, and remote locations.
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OPERATING RULES for controlling the level of the liquid:
1. If the level is "low" or less, turn the Pump ON.
2. If the level is "full" or more, turn the Pump OFF.
3. If the level is "too full" or more, OPEN the Drain.
4. If the level is "full" or less, CLOSE the Drain.
Central
Kantronics
TNC Based
Station
Remote
Kantronics
TNC Based
Station
radio
connection
between TNCs
Pressure
Sensor
LIQUID
Pump
Drain
Too Full
Full
Low
Tank
Control line 1 (ON/OFF)
Control line 2 (OPEN/CLOSE)
A/D sensor line 1