2.2.61. Meter Command Class, version 5

The Meter Command Class is used to advertise instantaneous and accumulated numerical readings.

The Command Class is intended for accumulated values in physical units from a water meter or metering device (gas, electric etc.) and thereby enabling some automatic meter reading capabilities.

2.2.61.1. Compatibility considerations

The Meter Command Class, version 5 adds support for Heating and Cooling Meter types.

The Meter Command Class, version 5 is backwards compatible with version 4.

Commands and fields not described in this version MUST remain unchanged from version 4.

2.2.61.2. Meter Supported Report Command

This command is used to advertise supported scales and capabilities of the sending.

Table 2.366 Meter Supported Report Command, version 5

7

6

5

4

3

2

1

0

Command Class = COMMAND_CLASS_METER (0x32)

Command = METER_SUPPORTED_REPORT (0x04)

Meter Reset

Rate Type

Meter Type

M.S.T

Scale Supported “Byte 1”

Number of Scale Supported Bytes to Follow (Version 4 Extension)

Scale Supported 1 “Byte 2”

…

Scale Supported N “Byte N+1”

All fields not described below MUST remain unchanged from version 4.

Table 2.367 Meter Supported Report::Scale Supported Bitmask encoding

Meter Type

Scale

Scale Supported Byte Number

Scale Supported Bit position

Measurement mode

Version

Electric

Meter

kWh

Byte 1

Bit 0

Accumulated

1

kVAh

Byte 1

Bit 1

Accumulated

2

W

Byte 1

Bit 2

Instant

2

Pulse count

Byte 1

Bit 3

Accumulated

2

V

Byte 1

Bit 4

Instant

3

A

Byte 1

Bit 5

Instant

3

Power factor

Byte 1

Bit 6

Instant

3

kVar

Byte 2

Bit 0

Instant

4

kVarh

Byte 2

Bit 1

Accumulated

4

Reserved

Byte 2

Bit 2-7

Reserved

-

Gas meter

Cubic meters

Byte 1

Bit 0

Accumulated

1

Cubic feet

Byte 1

Bit 1

Accumulated

2

Reserved

Byte 1

Bit 2

n/a

-

Pulse count

Byte 1

Bit 3

Accumulated

2

Reserved

Byte 1

Bit 4-6

Reserved

-

Reserved

Byte 2

Bit 0-7

Reserved

-

Water

meter

Cubic meters

Byte 1

Bit 0

Accumulated

1

Cubic feet

Byte 1

Bit 1

Accumulated

1

US gallons

Byte 1

Bit 2

Accumulated

1

Pulse count

Byte 1

Bit 3

Accumulated

2

Reserved

Byte 1

Bit 4-6

Reserved

-

Reserved

Byte 2

Bit 0-7

Reserved

-

Heating

meter

kWh

Byte 1

Bit 0

Accumulated

5

Reserved

Byte 1

Bit 1-6

Reserved

-

Reserved

Byte 2

Bit 0-7

Reserved

-

Cooling

kWh

Byte 1

Bit 0

Accumulated

5

Reserved

Byte 1

Bit 1-6

Reserved

-

Reserved

Byte 2

Bit 0-7

Reserved

-

2.2.61.3. Meter Report Command

This command is used to advertise the current meter reading at the sending node.

This command MUST NOT be issued using broadcast addressing.

Table 2.368 Meter Report Command, version 5

7

6

5

4

3

2

1

0

Command Class = COMMAND_CLASS_METER (0x32)

Command = METER_REPORT (0x02)

Scale (2)

Rate Type

Meter Type

Precision

Scale (1:0)

Size

Meter Value 1

…

Meter Value N

Delta Time 1

Delta Time 2

Previous Meter Value 1 (optional)

…

Previous Meter Value N (optional)

Scale 2

Fields not described below MUST remain unchanged from version 4.

Meter Type (5 bits)

This field is used to specify what type of metering physical unit is being reported.

This field MUST be encoded according to Table 2.369.

Table 2.369 Meter Report::Meter Type encoding

Value

Meter Type

Version

0x01

Electric meter

1

0x02

Gas meter

1

0x03

Water meter

1

0x04

Heating meter

5

0x05

Cooling meter

5

All other values are reserved and MUST NOT be used by a sending node. Reserved values MUST be ignored by a receiving node.

Scale (3 bits)

This field MUST advertise the unit used for the Meter Value and Previous Meter Value fields. This field is composed of two sub-fields Scale (2) and Scale (1:0), which MUST be composed and interpreted as one unit. Scale (2) MUST be the most significant bit.

The defined scales and their minimum required version are listed in Table 2.370. A node MUST NOT support a scale associated with a higher version than the version it supports.

This field MUST be encoded according to Table 2.371.

Table 2.370 Meter v5, defined scales

Meter Type

Scale

Unit

Version

Electric meter

0x00

kWh

1

0x01

kVAh

2

0x02

W

2

0x03

Pulse count

2

0x04

V

3

0x05

A

3

0x06

Power Factor

3

0x07

kVar

4

0x08

kVarh

4

Gas meter

0x00

Cubic meters

1

0x01

Cubic feet

2

0x03

Pulse count

2

Water meter

0x00

Cubic meters

1

0x01

Cubic feet

1

0x02

US Gallons

1

0x03

Pulse count

2

Heating meter

0x00

kWh

5

Cooling meter

0x00

kWh

5
Table 2.371 Meter Report::Scale / Scale 2 encoding

Scale

Scale (0:2) Value

Scale 2 Value

0x00

0x00

(omitted)

0x01

0x01

(omitted)

0x02

0x02

(omitted)

0x03

0x03

(omitted)

0x04

0x04

(omitted)

0x05

0x05

(omitted)

0x06

0x06

(omitted)

0x07

0x07

0x00

0x08

0x07

0x01

All other values are reserved and MUST not be used by a sending node. Reserved values MUST be ignored by a receiving node.