Contemporary Control Systems BAScontrol20 User Manual - Manual (Page 34)

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5.2.2 Universal Input
— Configured as Binary Input
(Channels UI1–UI8)
You can accept a binary input with any channel UI1–UI8 as follows:

On the Main Page ( Figure 13 ), click a title link from among UI1–UI8.

Under BAS Channel Configuration in the new page that appears ( Figure 20 ),
set the Channel Type to Binary Input.

In the BACnet Object Configuration (lower) section of the screen, all items
are as described in Section 5.2 above
— but Units defaults to NO_UNITS.

Attach your device to the pair of BASC20 pins for the chosen channel
— so
that the more positive connection is to pin A and the more negative to pin C.
Figure 20
— Universal Input Configured as Binary Input