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USER MANUAL 

 

 

 

STM 431J – Scavenger Transmitter Module  

 

 

© 2017 EnOcean  |  www.enocean.com 

  STM 431J User Manual  | v2.0 | Nov 2017 |  Page 21/ 34 

2.9

 

Radio telegram 

2.9.1

 

Normal operation – standard and enhanced security mode 

In normal operation 431J transmit telegram data according to the selected EEP or GP.  

(EnOcean Equipment Profile). In case of STM 431J is in enhanced security mode this tele-

gram is encrypted according the selected SLF. 

For details please refer to the EnOcean Equipment Profiles specification.

 

 

2.9.2

 

Teach-in telegram - standard and enhanced security mode 

In case of a wake-up via WAKE1 pin (LRN input) the module transmits a teach-in telegram. 

 

If the manufacturer code is not set, the module transmits a normal telegram according 

to 2.9.1 with the difference that DI_3=0. 

 

If a manufacturer code is set, this teach-in telegram contains special information as de-

scribed below.  

 

With this special teach-in telegram it is possible to identify the manufacturer of a device 

and the function and type of a device. The following EnOcean Equipment Profiles are sup-

ported by STM 431J. They have to be selected according to the availability of external oc-

cupancy button and set point control by the method described in 2.8: 

 

 

A5-02-05  Temperature sensor 0-40 °C (default) 

 

A5-10-03  Temperature sensor 0-40 °C, set point control 

 

A5-10-05  Temperature sensor 0-40 °C, set point, and occupancy control 

 

If a HSM 100 module is plugged onto the connector in addition the following EEPs are sup-

ported: 

 

 

A5-04-01  Temperature and humidity sensor 0-40 °C and 0-100% r.h. 

 

A5-10-10  Temperature and humidity sensor 0-40 °C and 0-100% r.h.,  

                set point control, and occupancy control 

 

A5-10-12  Temperature and humidity sensor 0-40 °C and 0-100% r.h., set point control 

 

For details please refer to the EnOcean Equipment Profiles specification. 

 

If Generic Profiles was selected then in teach-in mode Generic Profiles Teach-in request is 

transmitted. Please refer to the Generic Profiles Specification for details [8]. 

2.10

 

Secure radio telegram  

The STM 431J can be operated in: 

 

Standard mode – no enhanced security is used. This is the common operation mode, 

originally available. This is also the default factory mode. 

 

Security mode – communication is protected by enhanced security features. This 

mode was added later in module evolution. 

2.10.1

 

Switching between modes  

STM 431J can be switched from normal mode to secure mode and vice versa by long press 

of the LRN Button (Wake 1). 

 

The behaviour of the LRN button is following: 

Содержание STM 431J

Страница 1: ...ser Manual v2 0 Nov 2017 Page 1 34 STM 431J Scavenger Transmitter Module 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 W...

Страница 2: ...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 web site http www enocea...

Страница 3: ...18 2 8 1 EEP Configuration 18 2 8 2 GP Configuration 19 2 8 3 Security Configuration 19 2 9 Radio telegram 21 2 9 1 Normal operation standard and enhanced security mode 21 2 9 2 Teach in telegram stan...

Страница 4: ...ancy 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 cycl...

Страница 5: ...e description 3 Dolphin V4 API http www enocean com en enocean software 4 AN509Explanation of EnOcean security in applications http www enocean com en application notes 5 AN510Adding Security to EnOce...

Страница 6: ...ensor Measurement range 0 40 C resolution 0 16 K Accuracy typ 0 5 K between 17 C and 27 C typ 1 K between 0 C and 40 C EnOcean Equipment Profiles configurable EEPs A5 02 05 default A5 10 05 A5 10 03 a...

Страница 7: ...USER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 7 34 PCB drawing STM 431 J...

Страница 8: ...torage temperature 20 C 60 C recommended2 10 C 30 C 60 r h Shelf life in absolute darkness 36 months after delivery3 Humidity 0 93 r h non condensing 2 Recommended for maximum life of energy storage c...

Страница 9: ...User Manual v2 0 Nov 2017 Page 9 34 1 6 Ordering Information Type Ordering Code STM 431J S3061 D431 The module shall not be placed on conductive materials to prevent discharge of the internal energy s...

Страница 10: ...SER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 10 34 2 FUNCTIONAL DESCRIPTION 2 1 Simplified firmware flow chart and block diagra...

Страница 11: ...core to simplify usage of the DOLPHIN API Energy Store LRN LED 1 SET GND CW_1 CW_0 OCC CP_1 CP_0 LRN VDD Whip antenna UVDDext RESET BALUN Presence Signal every 100th every 10th every cyclic wake up or...

Страница 12: ...tput current max 5 mA Supply for external circuitry available while not in deep sleep mode SWPWR is switched on 0 25 ms before sampling of inputs and is switched off afterwards UVDDext UVDD of Dolphin...

Страница 13: ...C pin Programming I F SCLKDIO1 SCL EEPROM pin SCL I2C pin Programming I F WSDADIO2 Programming I F RSDADIO3 Programming I F WAKE0 OCC Wake input Input for external occupancy button Change of logic sta...

Страница 14: ...0 SCLKDIO1 WSDADIO2 RSDADIO3 This may lead to unpredictable malfunction of the device For I O pins configured as analog pins the IOVDD voltage level is not relevant See also 2 3 2 2 3 2 Analog and dig...

Страница 15: ...ge 0 40 C Accuracy 17 27 C 0 40 0 5 1 K K 2 3 4 Programming Interface The positions of the pads needed for programming are shown in the layout below Number Symbol 1 VDD 2 GND 3 PROG_EN 4 RESET 5 SCSED...

Страница 16: ...VCHAR 4 V 4 V VCHAR 6 V Limited internally 45 mA GND Ground connection 0 0 V VINA Voltage at every analog input pin 0 2 0 V VIND Voltage at RESET WAKE0 1 and every digital input 0 3 6 V 2 6 Power mana...

Страница 17: ...Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 17 34 2 7 Configuration 2 7 1 Configuration via pins depreciated Please consider that Configuration via PINs is...

Страница 18: ...arameters of STM 431J are initialized in production The module specific pa rameters key PSK and RLC are also initialised during production to a random value If the module is used with standard Firmwar...

Страница 19: ...e Change Defines if switch between standard and enhanced secu rity mode with long press of LRN button is allowed or not Default Enabled External EEPROM Present Default is set to yes If set to no then...

Страница 20: ...USER MANUAL STM 431J Scavenger Transmitter Module 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 20 34...

Страница 21: ...ternal oc cupancy button and set point control by the method described in 2 8 A5 02 05 Temperature sensor 0 40 C default A5 10 03 Temperature sensor 0 40 C set point control A5 10 05 Temperature senso...

Страница 22: ...In normal application scenario only very few are required The factory delivery mode of the STM 431J is standard not encrypted This mode is com mon mode originally available Secure mode was added in la...

Страница 23: ...formation is either send plain text as is or it is protected by the pre shared key PSK The PSK must be in printed on the transmitting device To use PSK teach in the PSK must be read by the end user an...

Страница 24: ...ing to the status of the internal threshold detector For details please refer to the Dolphin V4 Core Description documentation The WXIDIO pin is used to disconnect the energy storage element at voltag...

Страница 25: ...ll 540 13 5 10 10 16 21 storage too small 175 4 4 10 100 20 16 8 storage too small 140 3 5 100 1 43 7 8 260 65 1 6 100 10 98 3 6 120 30 0 8 100 100 112 3 100 25 0 6 Below is with secure mode enabled W...

Страница 26: ...etween WAKE0 and UVDDext WAKE1 provides an internal 1 8 M pull up See figure below When the LRN button is pressed WAKE1 is pulled to GND and a teach in telegram is trans mitted As long as the button i...

Страница 27: ...occupancy button In order to control the set point an external potentiometer has to be connected as shown below In addition this figure shows how to connect the occupancy button 3 4 Combination with...

Страница 28: ...nsor circuit absolute maximum is 5 mA The EEPROM current is typ 0 1 mA for 5 ms during write operation For details please refer to the User Manual of the EEPROM 7 24AA08 3 6 1 Included Information ID...

Страница 29: ...com STM 431J User Manual v2 0 Nov 2017 Page 29 34 3 7 Antenna layout 3 7 1 Whip antenna STM 430J Specification of the whip antenna L 64 mm Antenna layout recommendation STM 430J without host PCB STM 4...

Страница 30: ...odule 2017 EnOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 30 34 3 7 2 Helical antenna STM 431J Antenna recommendation STM 431J without host PCB STM 431J with host PCB Host PCB GND pla...

Страница 31: ...ing to the left To avoid damage to the solar cell or the PCB itself please make sure not to exert shear force side force within the plane of the solar cell onto the solar cell The maximum vertical for...

Страница 32: ...od Typically 30 m range through max 5 walls Ferroconcrete walls ceilings Typically 10 m range through max 1 ceiling Fire safety walls elevator shafts staircases and supply areas should be considered a...

Страница 33: ...STM 431J User Manual v2 0 Nov 2017 Page 33 34 4 AGENCY CERTIFICATIONS STM 431J complies with the Japanese radio law and is certified according to ARIB STD T108 When the product is placed on the Japan...

Страница 34: ...nOcean www enocean com STM 431J User Manual v2 0 Nov 2017 Page 34 34 5 Label Information 1 Product name STM 431J STM 435J 2 Step Code xy 3 Date Code KW YY e g 15 13 4 Status D431 z e g 1 5 DMC 6 ARIB...

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