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Binary Input Object
Present_Value of the Binary Input object can be set to a fixed value or allocated to a bit device address and set to the
value of that bit device.
The following diagram illustrates the concept when an external input is allocated to Present_Value of the Binary Input
object and the BACnet device reads out the state of the external input.
MICRO/I
BACnet device
Read value:
1
Read from BACnet device
The following table shows Present_Value, Polarity, and the physical state of the input.
Present_Value
INACTIVE
ACTIVE
INACTIVE
ACTIVE
BACnet objects
Device addresses
Reflected
Binary Input
object
Present_Value:
1
Write value of device address
Polarity
NORMAL
NORMAL
REVERSE
REVERSE
WindO/I-NV4 User's Manual
Digital input module
Physical input
#I0030: 1
IN 0: ON
OFF or INACTIVE
ON or ACTIVE
ON or ACTIVE
OFF or INACTIVE
7 BACnet Communication
DC Input:
24 V
Physical State of Input
3-141
3
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