You will find some hints in AN5041, pg 20:
Firmware package for STEVAL-IDP004V2
This firmware package with IO-Link stack is available only in a compiled version which is preloaded in the microcontroller with level 1 readout protection (you can also download your own firmware into the microcontroller).
The stack embeds two different communication interfaces with host unit, USB and RS485.
The version is fully featured with time limitation (10000 minutes): after this time expires, the system stops working and a new license is necessary to run the system again. To get the new free license, it is necessary to contact the stack provider (TEConcept GmbH) and provide them the hardware ID which can be read using the Control Tool, a
GUI developed by the same provider.
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Good luck!
/Peter
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