Solution:

The Intouch clam that they can read 8 bit data in one tag and process each tag separately, and by doing that user can save the control point from 8 to 1. You can also use each bit of ADAM-4052 in the same way. For example, if you need the state of bit 6 of ADAM-4052, you can add '.06' behind the tag name. Just like the window show in the attached file.