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be directly hooked to the controller by using special interfaces for analog inputs for that
purpose we may use two types of analog inputs interfaces, the compact one can handle 2 or 4
inputs and the modular one can read up to 64 analog inputs, divided into batches of 8.
The following two drawings show how the compact analog interface can be used for reading 2
or 4 analog inputs. In the first drawing the interface is plugged into the motherboard and the
sensors are powered by the 12v from the motherboard. In the second drawing the interface is
installed outside the enclosure of the Dream 2 and both the sensors and the interface are
powered externally.
Jumper JP12 decides the functionality of the board which can serve for other functions as well.
For reading analog inputs it should be set in left position.
The address switch should be set according to the address given to the analog inputs interface
during the “Hardware and connections” definition.
The dipswitches S2 define the type of the analog sensor connected to each input. 4-20 mA
sensors will be indicated by ON position of the appropriate dip switch and 0-5v sensor will be
indicated by OFF position of the appropriate dip switch.
Jp12 must be
in left position
S2- mA or V selection
The 4 jumpers
must be in
left position
