Mitsubishi Electric MELSEC iQ-F Series User Manual page 33

Buffer memory format of the Accumulator object
For the format of the properties assigned to the buffer memory, refer to the following.
Page 84 BACnet communication Accumulator
Ethernet module operation
■Operation at startup
For the startup operation, refer to the following.
Page 32 Writing from the program
For the Accumulator object, the integration count starts when the BACnet communications start. ( Page 31 Integration
count operation)
■Integration count operation
The current value changes when a value is written to the pulse setting value.
Present value 0
Pulse setting value 0
1.
Write a value to the pulse setting value.
2.
The difference of the pulse setting value from the previous value is reflected in the current value.
The following table lists the values reflected by the difference condition.
Difference condition
Previous pulse setting value = Current pulse setting value
Previous pulse setting value < Current pulse setting value
Previous pulse setting value > Current pulse setting value
*1 The current value can be set to any value by directly rewriting the value in the buffer memory.
900 901 921
+1 +20
100 10
101 121
Value to be reflected
0 (Not reflected to the current value)
Current pulse setting value - Previous pulse setting value
32768 (8000h) - Previous pulse setting value + Current pulse setting value
...
*1
0
32765
...
121
(7FFDH)
0 32765
4.2 BACnet Object Function
1001 1006
+5
= 32768 - 32765 + 2
2
(0002H)
2
4 FUNCTIONS
31
4