Wireshark · Display Filter Reference: Building Automation and Control Network APDU

Field name	Description	Type	Versions
bacapp.abort_reason	Abort Reason	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.application_tag_number	Application Tag Number	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.bad_length	Wrong length indicated	Label	1.12.0 to 4.4.2
bacapp.bad_opening_tag	Expected Opening Tag!	Label	2.0.0 to 4.4.2
bacapp.bad_tag	Wrong tag found	Label	2.0.0 to 4.4.2
bacapp.bit	bit	Boolean	2.0.0 to 4.4.2
bacapp.code_page	Code Page	Unsigned integer (16 bits)	2.0.0 to 4.4.2
bacapp.complete_bitstring	Complete bitstring	Byte sequence	2.0.0 to 4.4.2
bacapp.confirmed_service	Service Choice	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.context_tag_number	Context Tag Number	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.error_class	Error Class	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.error_code	Error Code	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.event_type	Event Type	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.extended_tag_number	Extended Tag Number	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.fragment	Message fragment	Frame number	1.4.0 to 4.4.2
bacapp.fragment.count	Message fragment count	Unsigned integer (32 bits)	1.4.13 to 4.4.2
bacapp.fragment.error	Message defragmentation error	Frame number	1.4.0 to 4.4.2
bacapp.fragment.multiple_tails	Message has multiple tail fragments	Boolean	1.4.0 to 4.4.2
bacapp.fragment.overlap	Message fragment overlap	Boolean	1.4.0 to 4.4.2
bacapp.fragment.overlap.conflicts	Message fragment overlapping with conflicting data	Boolean	1.4.0 to 4.4.2
bacapp.fragment.too_long_fragment	Message fragment too long	Boolean	1.4.0 to 4.4.2
bacapp.fragments	Message fragments	Label	1.4.0 to 4.4.2
bacapp.from_state	From State	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.instance_number	Instance Number	Unsigned integer (32 bits)	1.0.0 to 4.4.2
bacapp.invoke_id	Invoke ID	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.IPV4	IPV4	IPv4 address	1.4.0 to 4.4.2
bacapp.IPV6	IPV6	IPv6 address	1.4.0 to 4.4.2
bacapp.LVT	Length Value Type	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.mac_address_broadcast	MAC-address: broadcast	Label	2.0.0 to 4.4.2
bacapp.max_adpu_size	Size of Maximum ADPU accepted	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.max_recursion_depth_reached	Maximum allowed recursion depth reached. Dissection stopped.	Label	2.6.16 to 2.6.20, 3.0.10 to 3.0.14, 3.2.3 to 4.4.1
bacapp.more_segments	More Segments	Boolean	1.0.0 to 4.4.2
bacapp.NAK	NAK	Boolean	1.0.0 to 4.4.2
bacapp.named_tag	Named Tag	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.notify_type	Notify Type	Unsigned integer (8 bits)	3.0.0 to 4.4.2
bacapp.object_name	Object Name	Character string	3.0.0 to 4.4.2
bacapp.objectType	Object Type	Unsigned integer (32 bits)	1.0.0 to 4.4.2
bacapp.pduflags	PDU Flags	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.Port	Port	Unsigned integer (16 bits)	1.4.0 to 4.4.2
bacapp.present_value.bit_string	Present Value (bit string)	Character string	3.0.0 to 4.4.2
bacapp.present_value.boolean	Present Value (bool)	Boolean	3.0.0 to 4.4.2
bacapp.present_value.char_string	Present Value (char string)	Character string	3.0.0 to 4.4.2
bacapp.present_value.double	Present Value (double)	Floating point (double-precision)	3.6.0 to 4.4.2
bacapp.present_value.enum_index	Present Value (enum index)	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.present_value.int	Present Value (int)	Signed integer (64 bits)	3.0.0 to 4.4.2
bacapp.present_value.null	Present Value (null)	Character string	3.0.0 to 4.4.2
bacapp.present_value.octet_string	Present Value (octet string)	Byte sequence	3.0.0 to 4.4.2
bacapp.present_value.real	Present Value (real)	Floating point (double-precision)	3.0.0 to 4.4.2
bacapp.present_value.uint	Present Value (uint)	Unsigned integer (64 bits)	3.0.0 to 4.4.2
bacapp.processId	ProcessIdentifier	Unsigned integer (32 bits)	1.0.0 to 4.4.2
bacapp.property_identifier	Property Identifier	Unsigned integer (32 bits)	1.2.0 to 4.4.2
bacapp.reassembled.in	Reassembled in	Frame number	1.4.0 to 4.4.2
bacapp.reassembled.length	Reassembled BACapp length	Unsigned integer (32 bits)	1.4.0 to 4.4.2
bacapp.reject_reason	Reject Reason	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.reserved_ashrea	reserved for ASHRAE	Byte sequence	2.0.0 to 4.4.2
bacapp.response_segments	Max Response Segments accepted	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.restart_reason	Restart Reason	Unsigned integer (8 bits)	1.4.0 to 4.4.2
bacapp.SA	SA	Boolean	1.0.0 to 4.4.2
bacapp.segmented_request	Segmented Request	Boolean	1.0.0 to 4.4.2
bacapp.sequence_number	Sequence Number	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.SRV	SRV	Boolean	1.0.0 to 4.4.2
bacapp.string_character_set	String Character Set	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.tag	BACnet Tag	Byte sequence	1.0.0 to 1.4.12
bacapp.tag_class	Tag Class	Boolean	1.0.0 to 4.4.2
bacapp.tag_value16	Tag Value 16-bit	Unsigned integer (16 bits)	1.0.0 to 1.4.12
bacapp.tag_value32	Tag Value 32-bit	Unsigned integer (32 bits)	1.0.0 to 1.4.12
bacapp.tag_value8	Tag Value	Unsigned integer (8 bits)	1.0.0 to 1.4.12
bacapp.to_state	To State	Unsigned integer (32 bits)	3.0.0 to 4.4.2
bacapp.type	APDU Type	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.unconfirmed_service	Unconfirmed Service Choice	Unsigned integer (8 bits)	1.0.0 to 4.4.2
bacapp.unused_bits	Unused bits	Unsigned integer (8 bits)	2.0.0 to 4.4.2
bacapp.variable_part	BACnet APDU variable part:	Label	1.0.0 to 1.4.12
bacapp.vendor_identifier	Vendor Identifier	Unsigned integer (16 bits)	1.2.0 to 4.4.2
bacapp.who_is.high_limit	Device Instance Range High Limit	Unsigned integer (32 bits)	1.4.13 to 4.4.2
bacapp.who_is.low_limit	Device Instance Range Low Limit	Unsigned integer (32 bits)	1.4.13 to 4.4.2
bacapp.window_size	Proposed Window Size	Unsigned integer (8 bits)	1.0.0 to 4.4.2