
This article show how to control separate bits from 16bit register from separate tags
Create tag with data source connected to 16 bit register
Using Workbench create first tag in your asset connected to e.g. D register
Create tag for bit0 that will be Multiply
Add data source pointing on tag connected to 16bit register
Open editor for READ expression
As expression choose bittest function
As arguments for bit test function choose as "number" -> {{realtimepoint}} (this points on you 16bit register) and for "bitIndex" -> 0
select parameter {{realtimepoint}}
Put as bitIndex 0
Complete expression should look like this:
Now enable end edit WRITE expression
For write expression choose setbit() function
This time as argument use both parametrs {{realtimepoint}} and {{input}}
Complete expression should look like this
Complete settings for bit0
Multiply bit0 tag for rest bits in register
Select tag for bit0 and choose Multiply function
Change settings to generate missing 15bits. Notice that we are using {0} placeholder to iterate from 1-15
Now you have all bits ready to control from separate tags

Notice that (for Advance tag counting) even if you use couple of those tags on the same Display it will be counted by license server as one tag cause all of them are pointing on the same D register