IDEC MICRO/I HG1G-4VT22TF Series - Page 242

7 BACnet Communication
3-136 WindO/I-NV4 User’s Manual
Analog Input Object
Present_Value of the Analog Input object can be set to a fixed value or allocated device addresses and set to the
value of those device address. Present_Value is a Float32(F) numeric value. When device addresses are allocated to
Present_Value, Present_Value is set to the product of those device addresses multiplied by the coefficient.
The following diagram illustrates the concept when device addresses are allocated to Present_Value of the Analog
Input object and the BACnet device reads out the analog input value.
When writing the value of device addresses as Present_Value, Present_Value changes in the following manner.
Data Type Value of Device Addresses Present_Value of BACnet Device
UBIN16(W)
Value within range of each data type Value of Device Addresses
BIN16(I)
UBIN32(D)
BIN32(L)
Float32(F)
±0 ±0.0
Denormalized number
Value of Device Addresses
Normalized number
±∞ (±infinity)
Present_Value does not change
Non-number
BACnet objects
BACnet device
Device addresses Physical input
Analog Input
object
Present_Value:
10.0
#D0000: 1000
Coefficient: 0.01
External
analog input:
10 V
Reflected
CH0: 10 V
Read value:
10.0
MICRO/I Analog input module
Read from BACnet device Write value of data register