Mitsubishi Electric MELSEC iQ-R - Page 131

1 FUNCTIONS
1.4 BACnet Request Function (Read Function)
129
1
Creation of a program
Create a program to store the following data in a read target BACnet device to an access block for reading: instance number
of a destination device, ObjectIdentifier of an object, PropertyIdentifier and ArrayIndexe (up to 4).
■ Values to be stored to an access block for reading
For details on the format of access blocks for reading, refer to the following section.
Page 291 Format of access blocks for reading
Offset
(Decimal address)
Name Value to be stored
+0
(300)
CONTROL Store '1' (send request) when sending a
ReadPropertyMultiple(ReadProperty) service.
+1
(301)
STATUS  (No settings)
+2 to +3
(302 to 303)
Instance number of a destination device 3 (instance number of read target device)
+4 to +5
(304 to 305)
ObjectIdentifier K10 (Ah)
b32 to b22: 0 (object type number of an AnalogInput)
b21 to b0: 10 (instance number of an object)
For the ObjectIdentifier, refer to Point in the following section.
Page 19 List of objects
+6
(306)
Property-1 PropertyIdentifier 85 (PropertyIdentifier of a PresentValue)
+7
(307)
ArrayIndex FFFFh
+8
(308)
Read data 4 (The data type of the PresentValue of an AnalogInput object is REAL.)
+9
(309)
0 (No priority)
+10 to +11
(310 to 311)
 (No settings)
+12
(312)
Property-2 PropertyIdentifier FFFFh
+13
(313)
ArrayIndex  (No settings)
+14 to +17
(314 to 317)
Read data  (No settings)
+18
(318)
Property-3 PropertyIdentifier FFFFh
+19
(319)
ArrayIndex  (No settings)
+20 to +23
(320 to 323)
Read data  (No settings)
+24
(324)
Property-4 PropertyIdentifier FFFFh
+25
(325)
ArrayIndex  (No settings)
+26 to +29
(326 to 329)
Read data  (No settings)