User's Manual
© 2020 EnOcean | www.enocean.com PTM 210 / PTM 215 / PTM 215U / PTM 215J User Manual August 2020 | Page 25/45
USER MANUAL
PTM 210 / PTM 215 / PTM 215U / PTM 215J
DC Step code and later
5 NFC INTERFACE CONFIGURATION – PTM 215 / PTM 215J / PTM
215U
5.1 NFC Interface Overview
PTM 215 implements an NFC configuration interface that can be used to access (read and
write) the PTM 215 configuration memory and thereby configure the device as described in
the following chapters.
NFC communication distance is for security reasons set to require direct contact between the
NFC reader and the PTM 215 device.
The NFC interface of PTM 215 uses NFC Forum Type 2 Tag functionality as specified in the
ISO/IEC 14443 Part 2 and 3 standards. It is implemented using an NXP NT3H2111 Mifare
Ultralight tag.
For specific implementation aspects related to the NXP implementation in NT3H2111, please
refer to the NXP documentation which at the time of writing was available under this link:
https://www.nxp.com/docs/en/data-sheet/NT3H2111_2211.pdf
For a detailed description about the NFC functionality, please refer to the ISO/IEC 14443
standard.
5.2 NFC Access Protection
Protected data access is only possible after unlocking the configuration memory with the
correct 32-bit PIN code. By default, the protected area is locked and the default pin code for
unlocking access is 0x000E215.
The default pin code shall be changed to a user-defined value as part of the installation
process. This can be done by unlocking the NFC interface with the old PIN code and then
writing the new PIN code. For details please refer to chapter 5.3.
5.3 NFC Parameters – Memory Map
The NFC memory is organized in pages (a page is the smallest addressable unit) where each
page contains 4 byte of data. Several pages with similar functionality form an NFC memory
area.
These NFC pages are allocated into the following areas:
1. NDEF based (UTF-8)
Device Identification NDEF string (Public read-only access; no PIN required)
This area contains an NDEF string identifying key device parameters