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UINT16

16-bit Unsigned Integer

0.. 65, 535

SINT32

32-bit Signed Integer

-2, 147, 483, 647... 2, 147, 483, 647

UINT32

32-bit Unsigned Integer

0.. 4, 294, 967, 295

FLOAT

32-bit Float

-3.40282E38... 3.40282E38

Values Range – These are the only values that will be allowed for the SNVT, e.g. a value of 101 will not be

processed in a read or write on SNVT_Switch’s Value data item.

Invalid Value – The Invalid value is used to force the data item’s value should a value outside the value range be

encountered in a read or write. Should the invalid value be N/A ( Not Applicable ), the data item’s value will be

bounded by the indicated values range, e.g. an incoming read value of 101 will be stored as 100 for SNVT_Switch’s

Value data item. Note that in some cases both the type and raw values are specified. Raw values are not of the

same type of the SNVT’s measurement type, i.e. they are not scaled.

Data Item – SNVT’s containing more than one data item have a name specified for each item. This name can be

used in the SNVT_Option field of a Map Descriptor to isolate only this one item.

SNVT_abs_humid

Data Length

Suggested Data Array Formats

Float

Data Item 1

Measurement

Units

Values Range

Invalid Value

Absolute humidity

gram/kilogram

0.. 655.34

Raw: 65,535 (0xFFFF)

Type: 655.35

SNVT_address

Data Length

Suggested Data Array Formats

Uint16, Float

Data Item 1

Measurement

Units

Values Range

Invalid Value

Neuron Chip Address

16-bit address value

16,384 .. 64,767

N/A

SNVT_alarm

Data Length

Suggested Data Array Formats

Uint16, Float

Data Item 1-6

Alm_Location00,

..Alm_Location05

Measurement

Units

Values Range

Invalid Value

Location array element

8-bit unsigned byte

0 .. 255

N/A

Data Item 7

Object_ID

Measurement

Units

Values Range

Invalid Value

Object ID

object index

0 .. 65,535

N/A

Data Item 8

Alarm_type

Measurement

Units

Values Range

Invalid Value

alarm_type_t

N/A

0 .. 254

255 (0xFF)(AL_NUL)

Data Item 9

Priority_level

Measurement

Units

Values Range

Invalid Value

Priority_level_t

N/A

0 .. 11

255 (0xFF)(PR_NUL)

Data Item 10

Index_to_SNVT

Measurement

Units

Values Range

Invalid Value

Index to NV

index of NV causing

alarm

0 .. 65,535

N/A

Data Item 11-14

Alm_Value00,

..Alm_Value03

Measurement

Units

Values Range

Invalid Value

Value array element

specific to NVT

0 .. 255

N/A

Data Item 15

Year

Measurement

Units

Values Range

Invalid Value

Year

year

0 .. 3000

N/A

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 71 72

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