I create a post with some sample code, working and tested, please check it in the search bar.
for your questions:
Any news concerning IEC61131 compliance ?
R: The openplc project can work, because this is esp32 based, but first you may need to stablish all the define inputs, outputs, connections based on the manual and datasheets of the components and schematics, so IEC61131 can be, but with a lot of work. There is not news of seeedstudio about this.
Is there any dedicated software repository in order to manage :
LTE connection
R: you need to check the AT commands from SIMCOM of the A7670G, for code and manage check the post: Edgebox-ESP-100 sample code compilation examples. (POWERED BY USERS)
CAN bus
R: i dont have some info, but the esp32 documentation about CAN, maybe can help you
O/I
R:Edgebox-ESP-100 sample code compilation examples. (POWERED BY USERS) , very basic use
whatever…
R: When i tested more capabilities of this device i share with the forum