IDEC WindO/I-NV4 - Page 243

WindO/I-NV4 User’s Manual 3-135
7 BACnet Communication
3
Communication
Writing a Value to Present_Value from the BACnet Device
Example: When #D0000 is allocated to the Present_Value device, #D0010 is allocated to the top device for priority
and trigger, and Float32(F) is allocated to the conversion type, the device addresses are allocated as
follows: #D0000 is the Present_Value for reading, #D0002 is the Present_Value for writing, #D0010 is the
Device for priority, and #D0011 is the Device for write trigger.
(1) The BACnet device writes the write value (20.0) to Priority_Array at the index number indicated by the specified
priority (3).
(2) Priority_Array with the smallest index number out of all non-NULL(00h) values is element 3 (20.0), so 20.0 is used
as the value of Present_Value.
(3) Present_Value (20.0) is written to the Present_Value for reading (#D0000).
BACnet objects Device addresses
BACnet device
Analog Value
object
Present_Value:
20.0
#D0000: 20.0
#D0002: XXXX
#D0010: XXXX
#D0011: XXXX
Reflected
Read value:
20.0
Priority:
3
MICRO/I
∙∙∙
Priority_Array
NULL(00h) 1
NULL(00h) 2
20.03
16
(1)
(2)
(3)
Present_Value
for reading
Present_Value
for writing
Device for priority
Device for write trigger