DNP3 object types supported

Please refer to the document, VTS-DNP3-DeviceProfile.pdf, which may be found in the Examples folder of your VTScada installation.

Object Description	Object Type	Object Variation	Read	Write
Single bit binary input all variations	1	0	✓
Single bit binary input	1	1	✓
Single bit binary input with status	1	2	✓
Single bit binary input event all variations	2	0	✓
Single bit binary input event without time	2	1	✓
Single bit binary input event with time	2	2	✓
Single bit binary input event with relative time	2	3	✓
Single bit binary output all variations	10	0	✓
Single bit binary output status	10	2	✓
Control relay output block	12	1		✓
Binary counter all variations	20	0	✓
32 bit binary counter	20	1	✓
16 bit binary counter	20	2	✓
32 bit delta counter	20	3	✓
16 bit delta counter	20	4	✓
32 bit binary counter without status	20	5	✓
16 bit binary counter without status	20	6	✓
32 bit delta counter without status	20	7	✓
16 bit delta counter without status	20	8	✓
Frozen binary counter all variations	21	0	✓
Frozen 32 bit binary counter with status	21	1	✓
Frozen 16 bit binary counter with status	21	2	✓
Frozen 32 bit delta counter with status	21	3	✓
Frozen 16 bit delta counter with status	21	4	✓
Frozen 32 bit binary counter with time	21	5	✓
Frozen 16 bit binary counter with time	21	6	✓
Frozen 32 bit delta counter with time	21	7	✓
Frozen 16 bit delta counter with time	21	8	✓
Frozen 32 bit binary counter no status	21	9	✓
Frozen 16 bit binary counter no status	21	10	✓
Frozen 32 bit delta counter no status	21	11	✓
Frozen 16 bit delta counter no status	21	12	✓
Binary counter event all variations	22	0	✓
32 bit binary counter event without time	22	1	✓
16 bit binary counter event without time	22	2	✓
32 bit delta counter event without time	22	3	✓
16 bit delta counter event without time	22	4	✓
32 bit binary counter event with time	22	5	✓
16 bit binary counter event with time	22	6	✓
32 bit delta counter event with time	22	7	✓
16 bit delta counter event with time	22	8	✓
Frozen binary counter event all variations	23	0	✓
Frozen 32 bit binary counter event without time	23	1	✓
Frozen 16 bit binary counter event without time	23	2	✓
Frozen 32 bit delta counter event without time	23	3	✓
Frozen 16 bit delta counter event without time	23	4	✓
Frozen 32 bit binary counter event with time	23	5	✓
Frozen 16 bit binary counter event with time	23	6	✓
Frozen 32 bit delta counter event with time	23	7	✓
Frozen 16 bit delta counter event with time	23	8	✓
Analog input all variations	30	0	✓
32 bit Analog input	30	1	✓
16 bit Analog input	30	2	✓
32 bit Analog input without status	30	3	✓
16 bit Analog input without status	30	4	✓
Float Analog input without status	30	5	✓
Double Analog input without status	30	6	✓
Analog input event all variations	32	0	✓
32 bit Analog input event without time	32	1	✓
16 bit Analog input event without time	32	2	✓
32 bit Analog input event with time	32	3	✓
16 bit Analog input event with time	32	4	✓
Float Analog input event without time	32	5	✓
Double Analog input event without time	32	6	✓
Float Analog input event with time	32	7	✓
Double Analog input event with time	32	8	✓
Analog output all variations	40	0	✓
32 bit Analog output status	40	1	✓
16 bit Analog output status	40	2	✓
32 bit Analog output control block	41	1		✓
16 bit Analog output control block	41	2		✓
Time and Date	50	1	✓	✓
Common Time Object	51	1	✓
Common Time Object - unsynchronized	51	2	✓
Time delay coarse	52	1	✓
Time delay fine	52	2	✓
Class 0 Event data	60	1	✓
Class 1 Event data	60	2	✓
Class 2 Event data	60	3	✓
Class 3 Event data	60	4	✓
File Identifier (older systems)	70	1	✓	✓
File Identifier (preferred object for newer systems)	70	5	✓
Internal Indications object	80	1		✓
Octet String	110	*	✓	✓
Octet Change Object*	111	*	✓

*Event\change objects would not normally be configured as I/O addresses. They are listed to indicate that processing support is provided them. Upon receiving an event\change object, the value of the corresponding static object will be updated. For example, if 110/255/6 is configured and an event is received for 111/13/6, then the tag reading the first address will be updated with the value from the event\change as they share the same index.

Static\event object pairs that obey this rule include:

g1 Binary Input and g2 Binary Input change

g10 Binary Output and g11 Binary Output change

g20 Counter and g22 Counter change

g21 Frozen Counter and g23 Frozen Counter change

g30 Analog Input and g32 Analog Input change

g40 Analog Output and g42 Analog Output change

g110 Octet Strings and g111 Octet String change

The data values returned for the objects that may be read:

Object Description	Return Value
Single bit binary input	0 or 1.
Single bit binary input with status	If status is OK, 0 or 1, else invalid.
Single bit binary input event without time	If status is OK, 0 or 1, else invalid. Refer to the note following this table.
Single bit binary input event with time	If status is OK, 0 or 1, else invalid. Refer to the note following this table.
Single bit binary output status	If status is OK, 0 or 1, else invalid.
32 bit binary counter	If status is OK, 32 bit unsigned integer, else invalid.
16 bit binary counter	If status is OK, 16 bit unsigned integer, else invalid.
32 bit delta counter	If status is OK, 32 bit unsigned integer, else invalid.
16 bit delta counter	If status is OK, 16 bit unsigned integer, else invalid.
32 bit binary counter without status	32 bit unsigned integer.
16 bit binary counter without status	16 bit unsigned integer.
32 bit delta counter without status	32 bit unsigned integer.
16 bit delta counter without status	16 bit unsigned integer.
32 bit binary counter event without time	If status is OK, 32 bit unsigned integer, else invalid. Refer to the note following this table.
16 bit binary counter event without time	If status is OK, 16 bit unsigned integer, else invalid. Refer to the note following this table.
32 bit delta counter event without time	If status is OK, 32 bit unsigned integer, else invalid. Refer to the note following this table.
16 bit delta counter event without time	If status is OK, 16 bit unsigned integer, else invalid. Refer to the note following this table.
32 bit binary counter event with time	If status is OK, 32 bit unsigned integer, else invalid. Refer to the note following this table.
16 bit binary counter event with time	If status is OK, 16 bit unsigned integer, else invalid. Refer to the note following this table.
32 bit delta counter event with time	If status is OK, 32 bit unsigned integer, else invalid. Refer to the note following this table.
16 bit delta counter event with time	If status is OK, 16 bit unsigned integer, else invalid. Refer to the note following this table..
32 bit Analog input	If status is OK, 32 bit signed integer, else invalid.
16 bit Analog input	If status is OK, 16 bit signed integer, else invalid.
32 bit Analog input without status	32 bit signed integer.
16 bit Analog input without status	16 bit signed integer.
32 bit Analog input event with time	If status is OK, 32 bit signed integer, else invalid. Refer to the note following this table.
16 bit Analog input event with time	If status is OK, 16 bit signed integer, else invalid. Refer to the note following this table.
32 bit Analog input event without time	If status is OK, 32 bit signed integer, else invalid. Refer to the note following this table.
16 bit Analog input event without time	If status is OK, 16 bit signed integer, else invalid. Refer to the note following this table.
32 bit Analog output status	If status is OK, 32 bit signed integer, else invalid.
16 bit Analog output status	If status is OK, 16 bit signed integer, else invalid.
Time and Date	The current date and time in the outstation as a floating-point number representing the number of milliseconds since Jan 1 1970.
File Identifier	A buffer containing the records requested, or an individual value of the specified type from the specified offset in a specified record.
Octet String	A buffer containing the string.

For events, the return value is an array of five elements:

Index	Element
0	The address of the point in the form Object/Variation/Address.
1	Value, after correction for any status flags. If the status is on-line, not restart and not communication lost, the value will be as reported in the event. Otherwise, the value will be invalid.
2	The timestamp of the event.
3	The actual value before correction for status flags
4	The status flags.

For those events that return a time, the time will be as recorded in the device. For those events that do not return a time, the time will be the local time when the driver received the message.

Time values are returned as a double, representing the time as the number of milliseconds since midnight, on 1/1/1970.

The data values that may be supplied for output objects:

Object Description	Data Value
Control relay output block	32 bit signed integer. If > 0, then action will be a latch on, close or raise. The time for the raise will be the value supplied in units of milliseconds. If =< 0, then action will be a latch off, open or lower. The time for the lower will be the absolute value supplied in units of milliseconds. The Latch flag, if TRUE, will cause the output to be a latch type.
32 bit Analog output control block	32 bit signed integer.
16 bit Analog output control block	16 bit signed integer.
Time and Date	The data value is ignored. The current date and time of the VTScada system will be sent to the outstation.
File Identifier	A buffer containing the records to be written.
Internal Indications	16 bit unsigned integer. Note that only certain values are allowed and will be detailed in the remote device's profile.

Note to VTScada programmers who are using the DNP3 driver in their code:

The following flags are available in the VTScada layer of the driver and will be updated by every response from the remote station:

Flag	Meaning
IINTimeSync	TRUE when Time sync is required by the Outstation.
IINLocalDO	TRUE when some DO's in the Outstation are in local control.
IINTrouble	TRUE when an abnormal condition exists in the Outstation.
IINRestart	TRUE when an Outstation restart has occurred.
IINEventOverflow	TRUE when Outstation event buffers have overflowed.
IINConfigCorrupt	TRUE when Outstation configuration is corrupt.

(Characteristics available in the Table of Type Characteristics.)