CompactLogix L30ER/L33ER, and ControlLogix L55/L61 are what we have talking to Red Lion HMIs. All I've done is create a PLC tag (called, e.g., I01) that's just an alias for Local:1:I.Data (sp?). The HMI reads it fine. I don't think I was able to point a Crimson tag directly to actual built-in "Local" tags in RSLogix, which is the only reason I created these particular L5k alias tags in the first place.