Object groups

DNP3 standards defines a list of object groups which can be exchanged between master and outstation. Among these object groups most are supported in AC500 which are marked with “X” in the below table.

Note, same variation must be supported in both master and outstation for it to be exchanged between them.

Object group No.	Object group name	Type	Variation	Description of the variation	AC500 Outstation
0	Device attributes	Attributes	196	Configuration ID
			197	Configuration version
			198	Configuration build date
			199	Configuration last change date
			200	Configuration digest
			201	Configuration digest algorithm
			202	Master resource ID
			203	Device location altitude	X
			204	Device location longitude	X
			205	Device location latitude	X
			206	User-assigned secondary operator name	X
			207	User-assigned primary operator name	X
			208	User-assigned system name	X
			209	Secure authentication version	X
			210	Number of security statistics per association
			211	Identification of support for user-specific attributes
			212	Number of master- defined data set prototypes
			213	Number of outstation-defined data set prototypes
			214	Number of master-defined data sets
			215	Number of outstation-defined data sets
			216	Maximum number of binary output objects per request	X
			217	Local timing accuracy
			218	Duration of time accuracy
			219	Support for analog output events
			220	Maximum analog output index	X
			221	Number of analog outputs	X
			222	Support for binary output events	X
			223	Maximum binary output index	X
			224	Number of binary outputs	X
			225	Support for frozen counter events	X
			226	Support for frozen counters	X
			227	Support for counter events	X
			228	Maximum counter index	X
			229	Number of counter points	X
			230	Support for frozen analog inputs	X
			231	Support for analog input events	X
			232	Maximum analog input index	X
			233	Number of analog input points	X
			234	Support for double-bit binary input events	X
			235	Maximum double-bit binary index	X
			236	Number of double-bit binary input points	X
			237	Support for binary input events	X
			238	Maximum binary input index	X
			239	Number of binary input points	X
			240	Maximum transmit fragment size	X
			241	Maximum receive fragment size	X
			242	Device manufacturer's software version	X
			243	Device manufacturer's hardware version	X
			244	User-assigned owner name	X
			245	User-assigned location name	X
			246	User-assigned ID code/number	X
			247	User-assigned device name	X
			248	Device serial number
			249	DNP3 subset and conformance
			250	Device manufacturer's product name and model	X
			252	Device manufacturer's name	X
			254	Non-specific all attributes request
			255	List of attribute variations
1	Binary inputs	Static	0	Any variation	X
			1	Binary input state without flags	X
			2	Binary input state with flags	X
2	Binary inputs	Event	0	Any variation	X
			1	Binary input event without time	X
			2	Binary input event with absolute time	X
			3	Binary input event with relative time	X
3	Double bit binary input	Static	0	Any variation	X
			1	Double but binary without status flags	X
			2	Double but binary with status flags	X
4	Double bit binary input	Event	0	Any variation	X
			1	Double bit binary input event without time	X
			2	Double bit binary input event with absolute time	X
			3	Double bit binary input event with relative time	X
10	Binary outputs	Static	0	Any variation	X
			1	Binary output status without flags	X
			2	Binary output status with flags	X
11	Binary outputs	Event	0	Any variation	X
			1	Binary input event without time	X
			2	Binary input event with time	X
12	Binary output command	Static	0	Any variation	X
			1	Control Relay Output Block (CROB)	X
			2	Pattern control block (PCB)
			3	Pattern mask
13	Binary output command	Command (event)	0	Any variation	X
			1	Command status without time	X
			2	Command status with time	X
20	Counters	Static	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit with flag, delta	X
			4	16 bit with flag, delta	X
			5	32 bit without flag	X
			6	16 bit without flag	X
			7	32 bit without flag, delta	O
			8	16 bit without flag, delta	O
21	Frozen counters	Static	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit with flag, delta	O
			4	16 bit with flag, delta	O
			5	32 bit with flag and time	X
			6	16 bit with flag and time	X
			7	32 bit with flag and time, delta	O
			8	16 bit with flag and time, delta	O
			9	32 bit without flag	X
			10	16 bit without flag	X
			11	32 bit without flag, delta	O
			12	16 bit without flag, delta	O
22	Counters	Event	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit with flag, delta	O
			4	16 bit with flag, delta	O
			5	32 bit with flag and time	X
			6	16 bit with flag and time	X
			7	32 bit with flag and time, delta	O
			8	16 bit with flag and time, delta	O
23	Frozen counters	Event	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit with flag, delta	O
			4	16 bit with flag, delta	O
			5	32 bit with flag and time	X
			6	16 bit with flag and time	X
			7	32 bit with flag and time, delta	O
			8	16 bit with flag and time, delta	O
30	Analog input	Static	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit without flag	X
			4	16 bit without flag	X
			5	Single precision, floating point with flag	X
			6	Double precision, floating point with flag	X
31	Frozen analog inputs	Static	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	32 bit with time to freeze	X
			4	16 bit with time to freeze	X
			5	32 bit without flag	X
			6	16 bit without flag	X
			7	Single precision, floating point with flag	X
			8	Double precision, floating point with flag	X
32	Analog input	Event	0	Any variation	X
			1	32 bit without time	X
			2	16 bit without time	X
			3	32 bit with time	X
			4	16 bit with time	X
			5	Single precision, floating point without time	X
			6	Double precision, floating point without time	X
			7	Single precision, floating point with time	X
			8	Double precision, floating point with time	X
33	Frozen analog inputs	Event	0	Any variation	X
			1	32 bit without time	X
			2	16 bit without time	X
			3	32 bit with time	X
			4	16 bit with time	X
			5	Single precision, floating point without time	X
			6	Double precision, floating point without time	X
			7	Single precision, floating point with time	X
			8	Double precision, floating point with time	X
34	Analog input reporting deadband	Static	0	Any variation	X
			1	16 bit	X
			2	32 bit	X
			3	Single precision, floating point	X
40	Analog output	Static	0	Any variation	X
			1	32 bit with flag	X
			2	16 bit with flag	X
			3	Single precision, floating point with flag	X
			4	Double precision, floating point with flag	X
41	Analog output	Command	0	Any variation	X
			1	32 bit	X
			2	16 bit	X
			3	Single precision, floating point	X
			4	Double precision, floating point	X
42	Analog output	Event	0	Any variation	X
			1	32 bit without time	X
			2	16 bit without time	X
			3	32 bit with time	X
			4	16 bit with time	X
			5	Single precision, floating point without time	X
			6	Double precision, floating point without time	X
			7	Single precision, floating point with time	X
			8	Double precision, floating point with time	X
43	Analog output command	Command (event)	0	Any variation	X
			1	32 bit without time	X
			2	16 bit without time	X
			3	32 bit with time	X
			4	16 bit with time	X
			5	Single precision, floating point without time	X
			6	Double precision, floating point without time	X
			7	Single precision, floating point with time	X
			8	Double precision, floating point with time	X
50	Time and date	Info	1	Absolute time	X
			2	Absolute time and interval	X
			3	Absolute time at last recorded time	X
			4	Indexed absolute time and long interval
51	Time and date common time of occurrences	Info	1	Absolute time, synchronized	X
51	Time and date common time of occurrences	Info	2	Absolute time, unsynchronized	X
52	Time delays	Info	1	Coarse	X
52	Time delays	Info	2	Fine	X
60	Class objects	Info	1	Class 0 data	X
			2	Class 1 data	X
			3	Class 2 data	X
			4	Class 3 data	X
70	File transfer	Info	1	File identifier - superseded
			2	File control - authentication
			3	File command
		Info / event	4	File command status
		Info	5	File transport
		Info / event	6	File transport status
		Info	7	File descriptor
		Info	8	File specification string
80	Internal Indications	Static	1	Packed format - 16 IIN bits	X
81	Device storage	Info	1	Buffer fill status	O
110	Octet strings	Static	All	Octet string - none - general description common to all variations
111	Octet strings	Event	All	Octet string event - none - general description common to all
112	Virtual terminal output blocks	Static	All	Virtual terminal output block - none - general description common to all variations
113	Virtual terminal event data	Event	All	Virtual terminal event data - none - general description common to all variations
120	Authentication	Info	0	Assign Class	X
			1	Challenge	X
			2	Reply	X
			3	Aggressive mode request	X
			4	Session key status request	X
			5	Session key status	X
			6	Session key change	X
		Event /Info	7	Error	X
		Info	8	User certificate	X
			9	Message authentication code (MAC)	X
			10	User status change	X
			11	Update key change request	X
			12	Update key change reply	X
			13	Update key change	X
			14	Update key change signature
			15	Update key change confirmation	X
121	Security statistics	Static	0	Assign class
121	Security statistics	Static	1	32 bit with flag
122	Security statistics	Event	1	32 bit with flag
122	Security statistics	Event	2	32 bit with flag and time

Binary input
Binary output
Double binary input
Analog input
Analog output
Counters
Quality flag
List of object group mapping points