USER MANUAL
STM 550 / EMSI
–
ENOCEAN MULTISENSOR FOR IOT APPLICATIONS
© 2020 EnOcean | www.enocean.com F-710-017, V1.0
STM 550 / EMSI User Manual | v1.3 | September 2020 | Page 41/97
7.1
Radio-based commissioning
Radio-based commissioning is used to associate STM 550 with other devices by sending a
dedicated radio telegram (a so-called commissioning telegram).
To do so, STM 550 can transmit a dedicated teach-in telegram identifying its relevant pa-
rameters as discussed in chapter 5.2. Transmission of the teach-in telegram is triggered by
pressing the LRN button or via the NFC interface by setting the function mode to Learn Mode
as described in chapter 9.5.11.
Radio-based commissioning mode is intended for applications where NFC commissioning can-
not be used. Radio-based commissioning can be disabled via NFC if the device is operating
in high security mode to prevent transmission of the security key over the air.
7.2
QR code commissioning
QR code-based commissioning reads the required parameters from a dedicated QR code in
the product label (described in chapter 4.4). The parameters are encoded according to the
ANSI/MH10.8.2-2013 industry standard.
The QR code on the product label in chapter 4.4 encodes the following string:
30S01P000B013ZF9714BC5E8345CA72DFC78DB730PS6201-K516
+S01577501000097
Identifier
Length of data (excluding identifier) Value
30S
8 characters
EURID (hex)
13Z
32 characters
Security Key (hex)
30P
Up to 10 characters
Ordering Code (E6201-K516)
2P
4 characters
Step Code - Revision (CA-01)
S
14 characters
Serial Number
Table 7
–
QR code format
From this content, it is possible to extract the device address (
000012345678
) and the secu-
rity key (
0123456789ABCDEF0123456789ABCDEF
) which can then be used to commission STM 550
into a receiver and to decrypt and authenticate STM 550 data telegrams as described in
chapter 6.
7.3
Commissioning via NFC interface
STM 550 implements NFC Forum Type 2 Tag functionality as specified in the ISO/IEC 14443
Part 2 and 3 standards.
This NFC functionality can be used to read the device address and to configure the security
key of STM 550 as described in chapter 9.