ABB M2M to Siemens S7-1500

Hi

I'm trying to read data from a ABB M2M from at Siemens S7-1500 plc by Modbus, however I can't seem to find the starting address in the M2M.

I've tried every start address between 0 and 65535, and every ond fails.

https://library.e.abb.com/public/3921770555944801ad6d9e002d23ca23/2CSG445011D0201.pdf

https://library.e.abb.com/public/8150ec5b62dd47f1bb6210e650325355/2CSG445012D0201%20-%20Modbus%20Communication%20protocol_%20M2M%20Basic.pdf

Look up memory map in the above PDF files for the M2M communication.

Hope this helps you out.
Regards,