BACnetScan读BI多个属性——请求报文和应答报文解析

报文：

请求报文：

[567 ]55 FF 05 07 13 00 0F ED 01 04 00 03 0C 0E 0C 00 C0 00 01 1E 09 69 1F 42 C2

应答报文：

[568 ]55 FF 06 13 07 00 54 FB 01 00 30 0C 0E 0C 00 C0 00 01 1E 29 4B 4E C4 00 C0 00 01 4F 29 4D 4E 75 05 00 42 49 2D 31 4F 29 1C 4E 75 0A 00 45 64 69 74 20 48 65 72 65 4F 29 4F 4E 91 03 4F 29 55 4E 91 00 4F 29 6F 4E 82 04 00 4F 29 24 4E 91 00 4F 29 51 4E 10 4F 29 54 4E 91 00 4F 1F 01 ED

[567 ]

55 FF 05 07 13 00 0F ED

01 //Version

04 //Control

00 //PDU TYPE

03 //Maximum APDU Size Accepted=480

0C //InvokeID=12

0E //service choice =14, read-property-multiple-Request

0C //Tag0,List of Read Access Specifications=4,Object_Identifier

00 C0 00 01 //BINART_INPUT,instance_num=01

1E

09 //Context Tag0, L=1,Property Identifier

69 //PROP_REQUIRED=105

1F 42 C2

///RPM_ACK

[568 ]

55 FF 06 13 07 00 54 FB

01

00 //Control

30 //PDU Type=3 (BACnet-ComplexACK-PDU, SEG=0, MOR=0)

0C //Invoke_ID

0E //Service ACK Choice=14 (ReadPropertyMultiple-ACK)

0C //SD Context Tag 0 (Object Identifier, L=4)

00 C0 00 01 //Binary Input, Instance Number=1

1E //PD Opening Tag 1 (List Of Results)

29 //SD Context Tag 2 (Property Identifier, L=1)

4B // object-identifier =75

4E //opening tag 4,Property Value（不确定）

C4 //APPLICATION TAG=12,L=4,BACnetObjectIdentifer

00 C0 00 01 //Binary Input, Instance Number=1

4F

29 //CONTEXT tag2,L=1, propertyIdentifier

4D //object-name=77

4E //opening tag 4,Property Value,ASCII

75 //APPLICATION TAG 7，L=下面的值CharacterString

05 //L

00 //空字符

42 //

49 //

2D //<->

31 //<0>

4F

29 // propertyIdentifier

1C //description=28

4E //opening tag 4

75 //APPLICATION TAG 7，L=扩展字节的值CharacterString

0A //L=10

00 //空字符

45 //

64 //

69 //[i]

74 //

20 //<空格>

48 //

65 //

72 //

65 //

4F

29 // propertyIdentifier

4F //object_type=79

4E

91 // Application Tag 9 (Enumerated, L=1)

03 // OBJECT_BINARY_INPUT

4F

29 // propertyIdentifier

55 //Present Value

4E

91 //Application Tag 9 (Enumerated, L=1)

00 //INACTIVE

4F

29

6F // propertyIdentifier

4E

82 //application tag 8(bit string),L=2

04 00 //0,0,0,0(FALSE, FALSE ,FALSE, FALSE)米看懂怎么编的

4F

29 // propertyIdentifier

24 //event_state

4E

91 //Application Tag 9 (Enumerated, L=1)

00

4F

29 // propertyIdentifier

51 //Out_Of_Service=81

4E

10 //application tag1，L=0

4F

29 // propertyIdentifier

54 //Polarity=84

4E

91 //Application Tag 9 (Enumerated, L=1)

00 //Normal

4F

1F 01 ED[/i]