Right clicking on the module in any "picture" view of the PLC and selecting View Specs or View Manual links to the DirectSoft pages/manuals. The addressing shown is wrong for the H2-DM1x.
This is kind of a problem, especially if you are new to it (and more especially if you have no internet access on the plant floor.) It caught me out when trying to assist someone over the phone. I knew about the D2 addressing, but didn't know what to do with that vs H2 and wasn't on-site with the live machine.
The H2 Hardware User Manual has it right, but that ain't what you see from the above selections.