Enocean Ptm 535z User manual

USER MANUAL PREVIEW

PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

Patent protected:

WO98/36395, DE 100 25 561, DE 101 50 128,

WO 2004/051591, DE 103 01 678 A1, DE 10309334,

WO 04/109236, WO 05/096482, WO 02/095707,

US 6,747,573, US 7,019,241

Observe precautions! Electrostatic sensitive devices!

PTM 535Z (DB)

Zigbee Green Power Pushbutton Transmitter

01.12.2022

USER MANUAL PREVIEW

PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

REVISION HISTORY

The following major modifications and improvements have been made to this document:

Version

Author

Reviewer

Date

Major Changes

1.0

MKA

01.12.2022

Initial release

Published by EnOcean GmbH, Kolpingring 18a, 82041 Oberhaching, Germany

www.enocean.com, [email protected], phone +49 (89) 6734 6890

Important!

This information describes the type of component and shall not be considered as assured

characteristics. No responsibility is assumed for possible omissions or inaccuracies. Circuitry

and specifications are subject to change without notice. For the latest product specifications,

refer to the EnOcean website: http://www.enocean.com.

As far as patents or other rights of third parties are concerned, liability is only assumed for

modules, not for the described applications, processes and circuits.

EnOcean does not assume responsibility for use of modules described and limits its liability

to the replacement of modules determined to be defective due to workmanship. Devices or

systems containing RF components must meet the essential requirements of the local legal

authorities. The modules must not be used in any relation with equipment that supports,

directly or indirectly, human health or life or with applications that can result in danger for

people, animals or real value.

Components of the modules are considered and should be disposed of as hazardous waste.

Local government regulations are to be observed. Packing: Please use the recycling operators

known to you.

 
USER MANUAL PREVIEW 
 
 
 
PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER 
 
© 2022 EnOcean | www.enocean.com F-710-017, V1.0 PTM 535Z (DB) User Manual | v1.0 | December 2022 | Page 3/28 
 
TABLE OF CONTENT 
 
1General description........................................................................................4 
1.1 Basic functionality .........................................................................................4 
1.2 Technical data...............................................................................................5 
1.3 Environmental conditions ...............................................................................5 
1.4 Packaging information....................................................................................5 
1.5 Ordering information .....................................................................................5 
2Functional information ...................................................................................6 
2.1 Product overview...........................................................................................6 
2.2 Basic functionality .........................................................................................6 
2.3 Functional block diagram................................................................................6 
2.4 Product interface ...........................................................................................7 
2.5 Security key ............................................................................................... 10 
2.6 Related products ......................................................................................... 10 
3Zigbee Green Power (ZGP) radio ................................................................... 11 
3.1 Radio channels............................................................................................ 12 
3.2 Radio transmission sequence ........................................................................ 13 
3.3 Telegram format ......................................................................................... 14 
3.4 IEEE 802.15.4 MAC payload (ZGP telegram) ................................................... 15 
3.5 Channel selection ........................................................................................ 19 
4Mechanical interface .................................................................................... 20 
4.1 Product dimensions ..................................................................................... 20 
5Application information ................................................................................ 21 
5.1 Transmission range ..................................................................................... 21 
5.2 Device operation ......................................................................................... 21 
6Regulatory approvals ................................................................................... 22 
6.1 European Union........................................................................................... 22 
6.2 FCC (United States)..................................................................................... 23 
6.2.1 Certificate............................................................................................... 23 
6.2.2 Regulatory Statement .............................................................................. 24 
6.3 ISED (former Industry Canada)..................................................................... 25 
6.3.1 Certificate............................................................................................... 25 
6.3.2 Regulatory Statement .............................................................................. 26 
7Product history............................................................................................ 28 
8References ................................................................................................. 28 
 
 
 

USER MANUAL PREVIEW

PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

1General description

1.1 Basic functionality

PTM 535Z (DB) enables the realization of energy harvesting wireless switches for lighting,

building or industrial automation control systems using Zigbee Green Power (ZGP) technol-

ogy.

PTM 535Z (DB) is mechanically compatible with the established PTM 330 / PTM 430J / PTM

535 form factor enabling quick integration into existing designs for these products. Key ap-

plications are wall-mounted or portable pushbutton or position switches.

PTM 535Z (DB) pushbutton transmitters are intended for operation together with the ECO

200 kinetic harvester which generates the required energy based on an external action (such

as a button press). The combination of ECO 200 with PTM 535Z (DB) enables the implemen-

tation of self-powered (no batteries) and fully maintenance-free products. They can therefore

be used in all environments including locations that are difficult to reach or within hermeti-

cally sealed housings.

When the ECO 200 kinetic energy harvester is actuated (pressed or released), electrical en-

ergy is generated and a ZGP radio telegram is transmitted. This radio telegram transmits the

action of the energy generator (press or release) and the status of the two external inputs.

PTM 535Z (DB) radio telegrams are protected with AES-128 security based on a device-

unique private key.

Figure 1 below shows the top side of PTM 535Z (DB) (on the left side) and the bottom side

of PTM 535Z (DB) (on the right side).

Figure 1 –PTM 535Z (DB) top and bottom view

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

1.2 Technical data

Radio Standards

2.4 GHz Zigbee Green Power

Zigbee Radio Channels

Default: Zigbee Channel 11

Selectable via LRN button: Zigbee Channel 11 … 26

Data Encoding

Zigbee Green Power ON / OFF Switch Model (Device ID 0x02)

Security

AES128 (CBC) authentication with sequence counter

Transmission Power

+4 dBm

Transmission Range (typ.)

30 m line of sight / 10 m indoor environment

Antenna

Integrated antenna

Power Supply

Kinetic harvester (ECO 200)

User Interface

Learn button

Operating Conditions

-25°C ... +65°C / 0 ... 90 % r.h.

Indoor use in dry rooms only

Dimensions

26.2 mm x 21.15 mm (same as PTM 535)

1.3 Environmental conditions

Operating Temperature

-25°C ... 65°C

Storage Temperature

-25°C ... 65°C

Humidity

0% to 95% r.h. (non-condensing)

1.4 Packaging information

Packaging Unit 100 units

Packaging Method Tray / Box (10 units per tray, 10 trays per box)

1.5 Ordering information

Type

Ordering Code

Description

PTM 535Z (DB)

S3071-A535:DB

PTM 535Z (DB) transmitter module

ECO 200

S3016-N200

ECO 200 kinetic energy generator

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

2Functional information

2.1 Product overview

The transmitter module PTM 535Z (DB) from EnOcean enables the implementation of wireless

buttons and switches without batteries. It transmits Zigbee Green Power (ZGP) data tele-

grams where the required energy is provided by an external electro-dynamic energy gener-

ator such as the kinetic harvester ECO 200.

2.2 Basic functionality

PTM 535Z (DB) works in conjunction with an electro-dynamic energy converter (e.g. ECO

200) which is actuated (pressed and released) by external action such as a button press. The

term “ECO 200” will be used throughout this document to describe a suitable energy con-

verter.

When ECO 200 is actuated (pressed / pushed or released / pulled), electrical energy is gen-

erated and a ZGP radio telegram is transmitted which identifies the action (pressed or re-

leased) and the status of the two external input contacts.

When ECO 200 is actuated in the opposite direction (restored to its original position), it sim-

ilarly generates energy which is used to transmit a different radio telegram. It is therefore

possible to distinguish between radio telegrams sent when ECO 200 was pressed and radio

telegrams sent when ECO 200 was released.

By identifying these different telegram types and measuring the time between pressing and

releasing of the energy generator, it is possible to distinguish between “Long” and “Short”

presses if required.

2.3 Functional block diagram

Figure 2 –Functional block diagram of PTM 535Z (DB) working with ECO 200

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

2.3.1 Key components

PTM 535Z (DB) uses the following main components to achieve the desired product function-

ality:

ECO 200 energy harvester

Converts the kinetic energy (press / release) into electrical energy and is used to power PTM

535Z (DB) in self-powered applications. Alternatively, a power supply might be used.

Power management

Converts the energy of the power generator into a stable supply voltage suitable to power

the device electronics. It also determines the polarity of the input voltage which allows

identifying the direction of the ECO 200 action (press or release).

Data processing

Determines the status of the external inputs and the ECO 200 action, encodes this status

into a data word, calculates the unique security signature, generates the proper radio

telegram structure and sends it to the 2.4 GHz BLE / Zigbee radio transmitter

2.4 GHz Zigbee radio transmitter

Transmits the data in the form of a series of short 2.4 GHz Zigbee Green Power (ZGP) radio

telegrams using the integrated antenna

2.4 Product interface

Figure 3 below shows the product interface of PTM 535Z (DB) seen from the top side (shown

on the left) and the bottom side (shown on the right).

Figure 3 –PTM 535Z (DB) product interface

The following chapters describe the key components of this product interface.

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

2.4.1 Energy harvester interface

PTM 535Z (DB) is designed to operate based on the energy supplied by a kinetic energy

harvester such as ECO 200. Refer to [1] for a description of ECO 200.

ECO 200 provides the harvested energy to PTM 535Z (DB) using its AC1 and AC2 output

pins. The polarity of the voltage identifies the direction of the ECO 200 action (press or re-

lease) which is transmitted by PTM 535Z (DB) as part of data telegrams. For press actions,

the voltage difference V(AC2) - V(AC1) is positive; for release actions this difference is neg-

ative.

PTM 535Z (DB) provides the AC1 and AC2 supply input signals which have to be connected

to the AC1 and AC2 supply output signals of the ECO 200 harvester or another suitable power

source. Connection between PTM 535Z (DB) and ECO 200 can either be made mechanically

(direct connection between the ECO 200 contacts and the PTM 535Z (DB) contacts) or by

wiring.

For a mechanical connection, PTM 535Z (DB) provides two pairs of AC1 and AC2 contact pads

on the bottom of the PCB. Having two pairs of contacts enables the user to select the orien-

tation of the ECO 200 harvester according to the mechanical design needs of the application.

The AC1 and AC2 contact pads of PTM 535Z (DB) can be mechanically connected to the AC1

and AC2 outputs of an ECO 200 kinetic harvester using a suitable fixation housing for ECO

200 and PTM 535Z (DB) such as the one shown on the right in Figure 4.

For a wired connection, PTM 535Z (DB) provides two boundary contact signals AC1 and AC2

(shown on the right side of Figure 3) which can be used for a wired connection to the AC1

and AC2 outputs of ECO 200.

Figure 4 below shows the ECO 200 harvester (on the left side) and an example for a me-

chanical integration with PTM 535Z (DB) (on the right side). This figure also indicates the

direction of movement which is a “Press”or “Release” action.

Figure 4 –ECO 200 kinetic harvester

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

2.4.2 External inputs

PTM 535Z (DB) provides two electrical inputs called INPUT1 and INPUT2 and will report the

status of these input pins as part of each data telegram. These signals can for instance be

used for external contacts or switches.

INPUT1 and INPUT2 are active low, meaning that they will be considered to be active (con-

nected) if they are connected to the GND signal of the PTM 535Z (DB) product interface and

inactive (not connected) if they are left open.

INPUT1 and INPUT2 must either be connected to the GND signal of the PTM 553BZ

product interface or be left open. Do not connect these signals to a supply voltage!

2.4.3 LRN button

PTM 535Z (DB) provides an LRN button which can be used to trigger the transmission of a

commissioning (LRN) telegram and to execute the channel selection process in Zigbee Green

Power.

2.4.4 Radio subsystem

PTM 535Z (DB) integrates a radio transceiver including a 2.4 GHz antenna for the transmis-

sion of Zigbee Green Power (ZGP) radio telegrams as described in chapter 3.

2.4.5 Installation QR code

PTM 535Z (DB) provides an Installation QR code to identify key parameters. Figure 5 shows

the position of the Installation QR code on the PTM 535Z (DB) module.

Figure 5 –Installation QR code position

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

2.4.5.1 QR code fields

The Installation QR code encodes product parameters according to the ANSI/MH10.8.2-2013

industry standard. Figure 6 shows an example of a PTM 535Z Installation QR code.

Figure 6 –Installation QR code example

The installation QR code shown in Figure 6 above encodes the following string:

30PS3071-A535+2PCB06+20S01541234+Z01020304050607080910111213141516

Table 1 below describes the ANSI/MH10.8.2 data identifiers used by the PTM 535Z (DB)

device label and shows the interpretation of the data therein.

Identifier

Length of data (excl. identifier)

Content

30P

10 characters

Product Order Code (S3071-A535)

4 characters

Product Revision (CB-06)

30S

8 characters

ZGP Source Address (4 byte, hexadecimal format)

32 characters

Security Key (16 byte, hexadecimal format)

14 characters

Product Serial Number (14 digits, decimal format)

Table 1 –QR code format

2.5 Security key

PTM 535Z (DB) authenticates ZGP data telegrams based on an authentication signature as

described in chapter 3.4.3.

The authentication and obfuscation functionalities are based on a device-specific random key

which is programmed at manufacturing. This key is provided by the Installation QR code on

the device described in chapter 2.4.5 and transmitted as part of the Commissioning telegram

as described in chapter 3.4.2.

2.6 Related products

Consider PTM 535BZ [U1][2] if configuration via NFC or dual mode (Zigbee Green Power or

Bluetooth Low Energy) is required.

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3Zigbee Green Power (ZGP) radio

PTM 535Z (DB) communicates using the Zigbee Green Power (ZGP) protocol. PTM 535Z (DB)

can transmit two types of ZGP telegrams:

◼Data telegrams

Data telegrams report the button status of PTM 535Z (DB)

◼Commissioning telegrams

Commissioning telegrams provide PTM 535Z (DB) device parameters necessary for

the receiver to interpret and authenticate data telegrams

PTM 535Z (DB) transmits ZGP data telegrams during normal operation to inform the receiver

about the action (press or release) of the connected ECO 200 harvester and the state of the

two input signals

PTM 535Z (DB) transmits ZGP commissioning telegrams if the ECO 200 harvester is actuated

and the LRN button is pressed.

If the LRN button remains pressed, then commissioning telegrams will be transmitted when-

ever the same ECO action (press or release) is executed as when the LRN button became

pressed and ECO 200 was actuated. For the other direction (release or press), no telegram

will be transmitted.

If for instance the LRN button is pressed by the user and ECO 200 is then actuated into

“press” direction, then PTM 535Z (DB) will transmit commissioning telegrams as long as the

LRN button remains pressed and ECO 200 is moved into the press direction. No telegrams

will be transmitted as long as the LRN button remains pressed and ECO 200 is moved into

the release direction.

Both telegram types share the same high-level telegram format and differ only in the payload

as described in subsequent chapters.

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.1 Radio channels

PTM 535Z (DB) transmits ZGP telegrams on one of the sixteen IEEE 802.15.4 radio channel

within the 2.4 GHz radio frequency band (2402MHz … 2480MHz). The IEEE 802.15.4 radio

channel assignment is shown in Table 2 below.

Primary channels (marked bold) are specified as preferred channels for the transmission of

ZGP telegrams. When a ZGP network is formed, those primary channels will be evaluated

first when selecting the radio channel used by the ZGP network. Most ZGP systems therefore

operate on one of the primary channels.

Channel Number

Channel Type

Center Frequency

11 (default)

Primary Channel

2405 MHz

Standard Channel

2410 MHz

Standard Channel

2415 MHz

Standard Channel

2420 MHz

Primary Channel

2425 MHz

Standard Channel

2430 MHz

Standard Channel

2435 MHz

Standard Channel

2440 MHz

Standard Channel

2445 MHz

Primary Channel

2450 MHz

Standard Channel

2455 MHz

Standard Channel

2460 MHz

Standard Channel

2465 MHz

Standard Channel

2470 MHz

Primary Channel

2475 MHz

Standard Channel

2480 MHz

Table 2 –IEEE 802.15.4 radio channels

By default, PTM 535Z (DB) uses IEEE 802.15.4 radio channel 11 (which is a primary channel)

when transmitting ZGP telegrams. Other channels can be selected using the LRN button as

part of the commissioning process as described in chapter 3.5.

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.2 Radio transmission sequence

PTM 535Z (DB) transmits ZGP data telegrams as a set of redundant transmissions where the

same data telegram is transmitted 3 times. The timing interval between the start of two

consecutive redundant data telegrams is approximately 2.5 ms and varies by some random

timing offset.

Figure 7 below shows the ZGP radio transmission sequence used by PTM 535Z (DB) for data

telegrams.

Figure 7 –ZGP radio transmission sequence for data telegrams

PTM 535Z (DB) transmits ZGP commissioning telegrams (which are much longer than ZGP

data telegrams) as a set of redundant transmissions where the same data telegram is trans-

mitted 2 times. The timing interval between the start of the two consecutive redundant com-

missioning telegrams is approximately 2.5 ms and varies by some random timing offset.

Figure 8 below shows the ZGP radio transmission sequence used by PTM 535Z (DB) for com-

missioning telegrams.

Figure 8 –ZGP radio transmission sequence for commissioning telegrams

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.3 Telegram format

PTM 535Z (DB) transmits ZGP radio telegrams in the 2.4 GHz band according to the Zigbee

Green Power specification [3] which uses IEEE 802.15.4 [4] as lower layer standard. Please

refer to these specifications for detailed, up to date information.

Figure 9 below summarizes the high-level IEEE 802.15.4 / Zigbee Green Power frame struc-

ture. The content of these fields is described in more detail in the next chapters.

Figure 9 –IEEE 802.15.4 / Zigbee Green Power frame structure

3.3.1 Data integrity

Correct reception of the IEEE 802.15.4 frame is ensured using a 2-byte Cyclic Redundancy

Check (CRC16) which forms the IEEE 802.15.4 MAC Trailer field.

3.3.2 Byte order

ZGP uses little endian byte order meaning that if a data structure (e.g. Source Address,

Frame Control or Sequence Number) is bigger than 1 byte then the least significant byte is

transmitted first. Considering the case of the 4-byte Source Address 0x01501234, these 4

bytes will be transmitted (and received) in the order 0x34 first, 0x12 second, 0x50 third and

0x01 last.

3.3.3 IEEE 802.15.4 PHY Header

The IEEE 802.15.4 PHY header consists of the following fields:

◼Preamble (4 byte long, always 0x0000:0000)

◼Start of Frame (1 byte long, always 0xA7)

◼Length of Frame (1 byte long, length depending on ZGP payload length)

The structure of the IEEE 802.15.4 PHY header is shown in Figure 10 below.

Figure 10 –IEEE 802.15.4 PHY header structure

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.3.3.1 Frame Length

The Frame Length of the 802.15.4 frame depends on the telegram type (data telegram or

commissioning telegram). Table 3 below lists the telegram length for the supported telegram

types.

Telegramm Type

Device ID

Length

Data Telegram

0x02

24 byte (0x18)

Commissioning Telegram

0x02

42 byte (0x2A)

Table 3 –Telegram length for supported telegram types

3.3.4 IEEE 802.15.4 MAC Header

The IEEE 802.15.4 MAC Header contains the following fields:

◼IEEE 802.15.4 Frame Control Field (1 byte)

The Frame Control Field is 0x0801 for all ZGP telegram types supported by PTM 535Z

(DB)

◼Sequence Number (1 byte)

The Sequence Number is an incremental number used to identify the order of telegrams

◼Address Field (4 byte)

The Address Field is set to 0xFFFF:FFFF for all PTM 535Z (DB) ZGP telegrams

Figure 11 below shows the IEEE 802.15.4 MAC header structure.

Figure 11 –IEEE 802.15.4 MAC header structure

3.4 IEEE 802.15.4 MAC payload (ZGP telegram)

The IEEE 802.15.4 MAC payload contains the ZGP telegram data. Figure 12 below shows the

ZGP telegram format.

Figure 12 –ZGP telegram format

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

The content of the ZGP telegram data field depends on the telegram type (ZGP data telegram

or ZGP commissioning telegram). Some of the fields shown in Figure 12 above are not used

in all telegram types. These fields are marked in italics.The structure of data and commis-

sioning telegrams is described in the subsequent chapters.

3.4.1 Data telegram structure

By default, PTM 535Z (DB) transmits data telegrams. The payload of data telegrams is 12

byte long. Figure 13 below shows the telegram structure for ZGP data telegrams.

Figure 13 –Structure of ZGP data telegrams

ZGP data telegrams contain the following fields:

◼Frame Control (1 byte)

The Frame Control field is set to 0x8C

◼Extended Frame Control (1 byte)

The Extended Frame Control field is set to 0x30

◼Source Address (4 byte)

The Source Address uniquely identifies the originator (sender) of ZGP telegrams. This

Source ID is assigned by Zigbee Alliance and cannot be changed by the user.

◼Sequence Counter (4 byte)

The Sequence Counter is a continuously incrementing counter used for security pro-

cessing. It is initialized to 0at the time of production and incremented for each tele-

gram (data telegram or commissioning telegram) sent. The least significant byte of

the Sequence Counter is used as Sequence Number in the IEEE 802.15.4 MAC Header.

◼ZGP command (1 byte)

The ZGP command identifies the switch action as described in the next chapter.

◼Security Signature (4 byte)

The Security Signature is used to authenticate PTM 535Z (DB) ZGP radio telegrams

as described in chapter 3.4.3

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.4.1.1 ZGP command

PTM 535Z (DB) uses a command table with eight entries corresponding to each of the eight

possible combinations of ECO 200 action (Press or Release), INPUT1 and INPUT2 status (Con-

nected or Not Connected) to determine which ZGP command will be sent upon the corre-

sponding input status.

Table 4 below shows the ZGP command that is transmitted for each of the eight possible

combinations of ECO 200 action, INPUT1 and INPUT2 status.

Table Index

INPUT2 Status

INPUT1 Status

ECO 200 Action

ZGP Command

ZGP_COMMAND_0

Not connected

Press action

0x22

ZGP_COMMAND_1

Not connected

Release action

0x23

ZGP_COMMAND_2

Not connected

Connected

Press action

0x12

ZGP_COMMAND_3

Not connected

Connected

Release action

0x13

ZGP_COMMAND_4

Connected

Not connected

Press action

0x14

ZGP_COMMAND_5

Connected

Not connected

Release action

0x15

ZGP_COMMAND_6

Connected

Press action

0x16

ZGP_COMMAND_7

Connected

Release action

0x17

Table 4 –ZGP command table

3.4.2 Commissioning telegram

Transmission of a commissioning telegram can be selected either by pressing the LRN button.

The commissioning telegram payload is shown in Figure 14 below.

Figure 14 –ZGP payload structure for commissioning telegrams

The commissioning telegram contains the following fields that are common to all Device ID:

◼ZGP Network Header (6 byte)

The ZGP Network Header is similar to that of data telegrams; the Sequence Counter

field is omitted in the ZGP Network Header as it is part of the Application Payload

◼Command (1 byte)

The ZGP Command field is set to 0xE0 to identify a commissioning telegram

◼Device ID (1 byte)

The Device Type identifies the Device ID used by PTM 535Z (DB) which is 0x02 (ON /

OFF switch).

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◼Options (1 byte)

The Option field provides information about the structure of the commissioning tele-

gram. It is always set to 0x81.

◼Extended Options (1 byte)

The Extended Option field provides information about the security model. It is always

set to 0xF2.

◼Encrypted Security Key (16 byte)

The Encrypted Security Key field contains an encrypted representation of the 16 byte

security key used by PTM 535Z (DB) to authenticate its data telegrams.

◼Key Hash (4 byte)

The Key Hash can be used to verify if the security key was correctly decrypted

◼Sequence Counter (4 byte)

The Sequence Counter is a continuously incrementing counter used for security pro-

cessing. It is initialized to 0 at the time of production and incremented for each tele-

gram (data telegram or commissioning telegram) sent.

3.4.3 Data telegram authentication

PTM 535Z (DB) implements telegram authentication for transmitted ZGP data telegrams as

specified by the ZGP specification. This ensures that only telegrams from transmitters using

a previously exchanged security key will be accepted by the receiver. Refer to the ZGP spec-

ification [3] for details about ZGP data telegram authentication.

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PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

3.5 Channel selection

ZGP uses the IEEE 802.15.4 radio standard [4] for telegram transmissions which defines 16

radio channels (designated as Channel 11 … Channel 26) as described in chapter 3.1.

The radio channel used for communication is selected when a ZGP network is formed and

usually remains the same throughout the lifetime of the network. The channel selection pro-

cess is designed to ensure that a certain channel quality (low disturbances) is achieved.

Devices within a ZGP network can receive radio telegrams from PTM 535Z (DB) only if PTM

535Z (DB) uses the same radio channel as the ZGP network. PTM 535Z (DB) therefore has

to be configured to use the right radio channel. This process is called channel selection.

Channel selection can be executed via the LRN button where PTM 535Z (DB) will announce

its identity (Source Address, Device ID, Application Information, Security Material) sequen-

tially on different radio channels.

If a ZGP network operates on the currently used radio channel and is configured to accept

new devices (for instance by pressing a dedicated button on the receiver) then it can signal

to the installer (for instance by blinking the controlled light) that PTM 535Z (DB) is now op-

erating on the right radio channel, that its Commissioning Telegram has been received and

that PTM 535Z (DB) is now part of the ZGP network.

At this point, the installer has to release the LRN button to complete the channel selection

sequence of PTM 535Z (DB) and trigger a data telegram (by actuating the connected ECO

200 harvester after the LRN button has been released) to signal to the receiver that the

configuration has been completed.

PTM 535Z (DB) will continue to operate on the selected channel until the channel selection

process is started again (for instance because the product using PTM 535Z (DB) has been

moved to a different room and should now be part of a different ZGP network).

Note that PTM 535Z (DB) will change to a different channel if the LRN button is pressed

during at least three consecutive ECO 200 actions (e.g. press –release - press).

Therefore, it is strongly recommended to transmit a data telegram after completion

of the channel selection sequence to avoid unintentional channel reconfiguration when

the LRN button is pressed the next time.

The channel selection sequence will always start with the radio channel that is currently used

by PTM 535Z (DB). This allows to communicate the identify of PTM 535Z (DB) to additional

devices in the same ZGP network (for instance to newly added devices or to devices that did

not receive the initial Commissioning Telegram).

After that, PTM 535Z (DB) will sequentially transmit commissioning telegrams on channels

11, 12, 13 … 25, 26. If channel 26 has been reached then the sequence will be restarted at

channel 11.

USER MANUAL PREVIEW

PTM 535Z (DB) –ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

4Mechanical interface

PTM 535Z (DB) uses the same mechanical outline as the existing PTM 535 / PTM 535Z / PTM

535J and PTM 535Z products. Existing mechanical designs combining one of the existing

variants with an ECO 200 harvester can therefore also be used with PTM 535Z (DB).

Note also that the five boundary contacts (AC1, AC2, INPUT1, INPUT2, GND) are located at

different positions in PTM 535Z Revision DB compared to PTM 535Z Revision DA.

4.1 Product dimensions

Figure 15 below provides a product drawing of PTM 535Z (DB). Refer to the PTM 535Z (DB)

product webpage for additional details.

Figure 15 –PTM 535Z (DB) product drawing

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