EnOcean STM 431J User Manual

USER MANUAL

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

Scavenger Transmitter Module STM 431J

September 11, 2020

Observe precautions! Electrostatic sensitive devices!

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

USER MANUAL

Update with long term energy storage replacement, additional transport mode for

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

REVISION HISTORY

The following major modifications and improvements have been made to the first version of this document:

No Major Changes

1.0 Initial version

1.1. Added Marking and STM 435J.

1.2. Small editorial corrections.

1.3. Added PCB drawing STM 431J and STM 435J. Added radio certificate.

1.4. Corrected WHIP antenna length.

1.41. Changed helical antenna drawing.

2.0 Update of revision with consolidation and small corrections.

2.1 Update of links and design.

3.0 shelf storage & air cargo, optimized secure mode, new drawings, logo

3.1 Updated ARIB regulations

Published by EnOcean GmbH, Kolpingring 18a, 82041 Oberhaching, Germany www.enocean.com, info@enocean.com, 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

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

TABLE OF CONTENT

4 5

GENERAL DESCRIPTION ................................................................................. 4

1.1 Basic functionality ......................................................................................... 4

1.2 References ................................................................................................... 4

1.3 Technical data ............................................................................................... 6

1.4 Physical dimensions ....................................................................................... 6

1.5 Environmental conditions ............................................................................... 7

1.6 Ordering Information ..................................................................................... 8

FUNCTIONAL DESCRIPTION ............................................................................ 9

2.1 Simplified firmware flow chart for standard /secure mode ................................. 10

2.2 Pin out ....................................................................................................... 11

2.3 Pin description and operational characteristics ................................................. 12

2.3.1 GPIO supply voltage ................................................................................ 14

2.3.2 Analog and digital inputs .......................................................................... 14

2.3.3 Temperature sensor ................................................................................. 15

2.3.4 Programming Interface............................................................................. 15

2.4 Absolute maximum ratings (non operating) .................................................... 16

2.5 Maximum ratings (operating) ........................................................................ 16

2.6 Power management and voltage regulators .................................................... 16

2.7 Configuration via programming interface ........................................................ 17

2.7.1 EEP Configuration .................................................................................... 17

2.7.2 Security Configuration .............................................................................. 18

2.8 Radio telegram ............................................................................................ 19

2.8.1 Normal operation – standard and enhanced security mode ........................... 19

2.8.2 Teach-in telegram - standard and enhanced security mode ........................... 19

2.9 Secure radio telegram .................................................................................. 19

2.9.1 Switching between modes ........................................................................ 19

2.9.2 Encrypted communication - Enhanced security mode ................................... 19

2.9.3 Security Teach-In - Enhanced security mode .............................................. 20

2.9.3.1 PSK Security Teach-in - Enhanced security mode - optional .................... 20

2.10 Signal telegram ...................................................................................... 20

2.11 Transmit timing ...................................................................................... 20

2.12 Charging circuitry ................................................................................... 22

2.13 Energy consumption ............................................................................... 22

2.13.1 Consumption in enhanced security mode .................................................... 23

APPLICATIONS INFORMATION ....................................................................... 24

3.1 Using the WAKE pins .................................................................................... 24

3.2 Temperature sensor ..................................................................................... 24

3.3 Set point control and occupancy button .......................................................... 25

3.4 Combination with humidity sensor module HSM 100 ........................................ 25

3.6 EEPROM Storage for the Rolling code ............................................................. 26

3.7 Antenna layout ............................................................................................ 26

3.7.1 Whip antenna .......................................................................................... 26

3.7.2 Helical antenna (STM 431J) ...................................................................... 27

3.8 Mounting STM 431J into a housing ................................................................. 28

3.9 Transmission range ..................................................................................... 29

AGENCY CERTIFICATIONS ............................................................................ 30

Label Information ........................................................................................ 31

5.1 QR Code label ............................................................................................. 31

5.1.1 Included Information: .............................................................................. 31

5.1.2 QR-Code Specification .............................................................................. 31

USER MANUAL

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

1 GENERAL DESCRIPTION

1.1 Basic functionality

The extremely power saving RF transmitter modules 43xJ of EnOcean are optimized for realization of wireless and maintenance free temperature sensors, or room operating panels including set point dial and occupancy button. They require only a minimum number of external components and provide an integrated and calibrated temperature sensor. Power supply is provided by a small solar cell, an external energy harvester or an external 3 V backup battery. An energy storage element is installed in order to bridge periods with no supply from the energy harvester. The module provides a user configurable cyclic wake up. After wake up, the internal microcontroller reads the status of the temperature sensor and optional set point dial. A radio telegram will be transmitted in case of a significant change of measured temperature or set point values or if the external occupancy button is pressed. In case of no relevant input change, a redundant retransmission signal is sent after a user configurable number of wake-ups to announce all current values. In addition to the cyclic wake-up, a wake up can be triggered externally using the input for the occupancy button or the internal LRN button. The firmware can be configured to use different EEPs / GPs according to the availability set point dial and occupancy button. STM 431J provides enhanced security features with encrypted communication. The modules can be switched from transport mode to standard or secure mode.

Features with built-in firmware



Pre-installed solar cell



On-board energy storage and charging circuit



On-board LRN button



On-board TX indicator LED



Calibrated internal temperature sensor



Input for external occupancy button and set point dial



Configurable wake-up and transmission cycle



Wake-up via Wake pins or LRN button



Support for humidity sensor module HSM 100



Enhanced Security communication

(to enable this feature, the receiver or gateway has to support EnOcean security)

Features accessible via API

Using the Dolphin V4 API library it is possible to write custom firmware for the module. The API provides:



Integrated 16.384 MHz 8051 CPU with 64 kB FLASH and 4 kB SRAM



Integrated temperature sensor



Various power down and sleep modes down to typ. 100 nA current consumption



Up to 13 configurable I/Os



10 bit ADC, 8 bit DAC

1.2 References

[1] Security of EnOcean Radio Networks – https://www.enocean-alliance.org/what-is-

enocean/specifications/

[2] Dolphin V4 Core Description - http://www.enocean.com/dolphin-v4-core-

description/

[3] Dolphin V4 API - http://www.enocean.com/en/enocean-software/

USER MANUAL

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

[4] AN509 Explanation of EnOcean security in applications -

http://www.enocean.com/en/application-notes/

[5] AN510 Adding Security to EnOcean Receivers -

http://www.enocean.com/en/application-notes/

[6] AN511 Advanced security in self-powered wireless applications -

http://www.enocean.com/en/application-notes/

[7] Microchip EEPROM Memory - www.microchip.com/serialeeprom/ [8] Generic Profiles Specification – https://www.enocean-alliance.org/what-is-

enocean/specifications/

[9] EnOcean Radio Protocol 2 - https://www.enocean.com/en/support/knowledge-base/

USER MANUAL

Antenna

Frequency

Data rate/Modulation type

Radiated

Power Supply

Operation start up time with empty

energy store

°C

Input Channels

Temperature sensor

EnOcean Equipment Profiles

SIGNAL 0x0E (Entering Transport Mode)

Generic Profiles

Enhanced Security features

Connector

Radio Regulations

Security Level Format

byte CMAC, VAES encryption

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

1.3 Technical data

Helix antenna (STM 431J)

928.35MHz 125 kbps/FSK

Output Power Typ. 0dBm

@ VDD Pre-installed solar cell

peration time in darkness @ 25°C

Internal: temperature sensor, LRN button

Measurement range 0-40 °C, resolution 0.16 K

configurable EEPs: A5-02-05 (default), A5-10-05, A5-10-03

Illumination 50-100000 lux

2.1 V–5.0 V, 2.6 V needed for start-up

min. 10 days, if energy storage is fully charged

typ. < 2.5 min @ 400 lux / 25

incandescent or fluorescent light

External: occupancy button, set point dial, HSM 100

Accuracy typ. ±0.5 K between 17 °C and 27 °C

typ. ±1 K between 0 °C and 40 °C

and with HSM 100: A5-04-01, A5-10-10, A5-10-12

Profiles Temp : 0 – 40 Celsius, with 8, 10, 12 ,16 bit resolution

More options available with source code change

CMAC (3 bytes) / RLC (3 bytes) / VAES

20 pins, grid 1.27 mm, □ 0.4 mm

ARIB STD-T108

24-bit RLC, RLC tx, 3-

1.4 Physical dimensions

PCB dimensions 43±0.2 x 16±0.3 x 1±0.1

Module height 8 mm

Weight 4.5 g

At default configuration (wake-up cycle 100 s, transmission cycle 1000 s). Energy storage performance degrades over life time, especially if energy storage is long time exposed to very high temperatures. High temperatures will accelerate aging. Very low temperature will temporary reduce capacity of energy store and this leads to considerable shorter dark time operation.

USER MANUAL

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

Drawing STM 431 J

1.5 Environmental conditions

Operating temperature -20 °C … +60 °C Storage temperature -20 °C … +60 °C, recommended2: +10 °C…+30 °C, <60%r.h. Shelf life (in absolute darkness) 36 months after delivery Humidity 0% … 93% r.h., non-condensing

Deep discharge of the energy storage leads to degradation of performance. Radio modules will be delivered in transport mode to avoid this. If there is a storage time after configuration or commissioning, the radio module has to be switched back to transport mode to reduce power consumption to a minimum.

If a storage time of more than 36 months is required, the energy storage (MS414FE) has to be recharged (e.g. 2 days @ 1.000 lux) or with external 3.1 V.

USER MANUAL

The module shall not

be placed on conductive materials, to prevent discharge of

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

the internal energy storages. Even materials such as conductive foam (ESD protection) may have negative impact.

1.6 Ordering Information

Type Ordering Code

STM 431J S3061-D431

USER MANUAL

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

2 FUNCTIONAL DESCRIPTION

The module will be shipped in transport mode to switch off the energy store for long term shelf storage and air cargo. The mode can be changed by pressing the learn button. The procedure for enter the standard mode has not been changed to keep compatible with modules before stepcode DE.

Make sure that the solar cell will get enough light for mode change and/or learn telegram.

Change from transport to standard mode



After pressing the learn button 1x short (1s) the radio module will enter Standard Mode (Mode 1). The LED will flash 1x and a standard learn telegram will be sent.

Change from standard to secure mode



After pressing the learn button 2x long (2x 5s, pause <1s) the radio module will enter Secure Mode (Mode 2). A secure learn telegram will be sent and the LED will flash 2x.



Change from secure or standard mode to transport mode

After pressing the learn button 1x long (5s) the radio module will enter Transport Mode (Mode 3). A signal telegram will be sent and the LED will flash 3x.

The following diagram illustrates all implemented mode transitions.

Short press: 1 s (firmware 0.1 – 3.0 s) Long press: 5 s (firmware 3 – 7 s) 2x long press with very short pause of max. 1 s between Customers can adapt the mode change options via module configuration (see 2.7):



Transport/Standard/Secure Mode change on (default see diagram above) or



limited to Transport & Secure Mode (details support@enocean.com) or



limited Transport & Standard Mode (details support@enocean.com)

USER MANUAL

Before changing the operating mode please make sure to clear the device from

all

The flag for actual mode itself is stored in non

volatile memory. After power down

Scavenger Transmitter Module

STM 431J (STEPCODE: DE and later)

receivers which have been taught to work with this device before. Otherwise the receiver will ignore the telegrams and the application will not work.

reset the previous selected mode is active. The mode change is limited to 50 times. In normal application scenario only very few are required.

2.1 Simplified firmware flow chart for standard /secure mode

+ 22 hidden pages

EnOcean STM 431J User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual