Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 671)

Paramacros
Chapter 20
20-27
#5081 to 5089 or #5581 to 5592 Active Tool Length Offsets
These are read-only parameters. They correspond to the currently active
tool length offsets (see chapter 20).
5081 Current axis 1 tool length offset. 5087 Current axis 7 tool length offset.
5082 Current axis 2 tool length offset. 5088 Current axis 8 tool length offset.
5083 Current axis 3 tool length offset. 5089 Current axis 9 tool length offset.
5084 Current axis 4 tool length offset.
5085 Current axis 5 tool length offset.
5086 Current axis 6 tool length offset.
Or if your system has more than 9 axes:
5581 Current axis 1 tool length offset. 5587 Current axis 7 tool length offset.
5582 Current axis 2 tool length offset. 5588 Current axis 8 tool length offset.
5583 Current axis 3 tool length offset. 5589 Current axis 9 tool length offset.
5584 Current axis 4 tool length offset. 5590 Current axis 10 tool length offset.
5585 Current axis 5 tool length offset. 5591 Current axis 11 tool length offset.
5586 Current axis 6 tool length offset. 5592 Current axis 12 tool length offset.