USER MANUAL
PTM 535 / PTM 535U / PTM 535J
–
ENOCEAN TRANSMITTER MODULE
© 2019 EnOcean | www.enocean.com
F-710-017, V1.0
PTM 535 / 535J User Manual | v1.5 | September 2020 | Page 15/36
3.3
Switching between operation modes
PTM 535 can be switched from standard mode (default) to enhanced security mode by con-
necting SECURE with VCC_MODE (see chapter 3 for details) and triggering the ECO 200.
Upon entry into enhanced security mode, a teach-in telegram is sent by PTM 535. The type
of the teach-in telegram (
Teach_In_Info : Type
) is:
1-PTM
.
PTM 535 will continue to transmit secure teach-in telegrams until the SECURE pin is discon-
nected from the VCC_MODE pin.
The secure teach-in message has to be transmitted as two consecutive telegrams due to its
payload size. Therefore, the ECO generator has to be triggered twice in order to transmit a
complete secure teach-in message. It is not required that the two contacts (SECURE and
VCC_MODE) remain connected throughout the transmission of both messages. It is suffi-
cient to connect them while actuating the ECO energy generator the first time.
For more information on the structure of the teach-in telegram please refer to chapter 4.2
of
http://www.enocean.com/en/security-specification/
PTM 535 can be switched from secure mode to normal mode by connecting STANDARD with
VCC_MODE and triggering the ECO 200. Then disconnect the pins.
Before changing the operating mode please make sure to clear the device from all
receivers which have been taught to work with this device before. Otherwise the
receiver will ignore the telegrams and the application will not work.
3.4
Transmission timing
The setup of the transmission timing allows avoiding possible collisions with data packages
of other EnOcean transmitters as well as disturbances from the environment. With each
transmission cycle, 3 identical subtelegrams are transmitted within 40 ms.
The transmission of a subtelegram lasts approximately 0.7 ms. The delay between the
three transmission bursts is affected at random.
PTM 535 transmits in secured mode 2 identical subtelegrams with length of ~ 1.3 ms
PTM radio modules are designed for manual button operation. The actuation rate
should therefore be limited to no more than 5 actuations per second.
For higher actuation rates, PTM radio modules might temporarily stop operation
and will restart operation after a period of 2 seconds without operation.
