2.2.16. Basic Tariff Information Command Class, version 1 [NEVER CERTIFIED]

Warning

THIS COMMAND CLASS HAS NEVER BEEN CERTIFIED

This command class has never been implemented and certified by a Z-Wave product Therefore, this Command Class definition MAY be updated in a non-backwards compatible manner, or even removed.

Consult with the Z-Wave Alliance Application Work Group if you consider implementing this Command Class.

This Basic Tariff Information Command Class for use with a single element or dual element meter, and for use with import (electricity received from grid) rates only. The command class is kept as simple as possible without any pricing information.

This command class supports a GET and REPORT. No Set command is supported, as it is not appropriate to set any of the parameters through Z-Wave.

2.2.16.1. Basic Tariff Information Get Command

This command is used to request current tariff information from the meter.

The Basic Tariff Information Report Command MUST be returned in response to this command.

This command MUST NOT be issued via multicast addressing.

A receiving node MUST NOT return a response if this command is received via multicast addressing. The Z-Wave Multicast frame, the broadcast NodeID and the Multi Channel multi-End Point destination are all considered multicast addressing methods.

Table 2.92 Basic Tariff Information Get Command

7	6	5	4	3	2	1	0
Command Class = COMMAND_CLASS_BASIC_TARIFF_INFO (0x36)
Command = BASIC_TARIFF_INFO_GET (0x01)

2.2.16.2. Basic Tariff Information Report Command

This command returns information on the number of import rates supported, and current import rate information. Application can send unsolicited Basic Tariff Report commands or requested by the Basic Tariff Get Information command.

Table 2.93 Basic Tariff Information Report Command

7	6	5	4	3	2	1	0
Command Class = COMMAND_CLASS_BASIC_TARIFF_INFO (0x36)
Command = BASIC_TARIFF_INFO_REPORT (0x02)
Dual	Reserved			Total No. Import Rates
Reserved				E1 - Current Rate in Use
E1 - Rate Consumption Register - MSB
E1 - Rate Consumption Register
E1 - Rate Consumption Register
E1 - Rate Consumption Register - LSB
E1 - Time for Next Rate - Hours
E1 - Time for Next Rate - Minutes
E1 - Time for Next Rate - Seconds
Reserved				E2 - Current Rate in Use
E2 - Rate Consumption Register - MSB
E2 - Rate Consumption Register
E2 - Rate Consumption Register
E2 - Rate Consumption Register - LSB

Dual (1 bit)

Single Element = 0, Two Elements = 1.

If single element the E2 fields are skipped in the frame. E1 – Time for Next Rate – Seconds will be the last byte of the message and the number of data bytes will be 9.

If two elements the E2 fields are present and the number of data bytes will be 14.

Total Number of Import Rates Supported (7 bits)

Field specifies the number of import rates E1 (and E2) supported by the meter. Range of legal decimal values are 1…8. No units used. The decimal values 0 and 9…15 are reserved and MUST be ignored by receiving devices.

Reserved

This field MUST be set to 0 by a sending node and MUST be ignored by a receiving node.

E1 - Current Rate in Use (8 bits)

Field specifies the current rate in use. Range of legal decimal values are 1…8. No units used. The decimal values 0 and 9…15 are reserved and MUST be ignored by receiving devices.

E1 - Rate Consumption Register (32 bits)

The meter has a 32-bit consumption register, for the energy used in each rate. This register is the rate consumption register for the current rate in use now on element 1. Units are in Wh.

E1 - Time for Next Rate - Hours (8 bits)

Field specifies the hour value of the time that the rate is due to change on element 1. Range of legal decimal values are 0…23, or 255. The values 24…254 are reserved and MUST be ignored by receiving devices.

E1 - Time for Next Rate - Minutes (8 bits)

Field specifies the minute value of the time that the rate is due to change on element 1. Range of legal decimal values are 0…59, or 255. The decimal values 60…254 are reserved and MUST be ignored by receiving devices.

E1 - Time for Next Rate - Seconds (8 bits)

Field specifies the second value of the time that the rate is due to change on element 1. Range of legal decimal values are 0…59, or 255. The decimal values 60…254 are reserved and MUST be ignored by receiving devices.

NOTE: 255 in each field of the Time to Next Rate specifies no switching time is in use, which is appropriate for single rate meters. 255 is only a legal value if used in all three Time to Next Rate fields.

E2 - Current Rate in Use (8 bits)

Field specifies the current rate in use on element 2. Range of legal decimal values are 1…8. No units used. The decimal values 0 and 9…15 are reserved and MUST be ignored by receiving devices.

E2 - Rate Consumption Register (32 bits)

The meter has a 32-bit consumption register, for the energy used in each rate. This register is the rate consumption register for the current rate in use now on element 2. Units are in Wh.