Rockwell Automation 1734-APB POINT I/O Profibus Adapter Module Installation Instructions - Manual (Page 5)

5 POINT I/O PROFIBUS Adapter
Publication 1734-IN014C-EN-P - March 2002
5. Set the node address on the node address thumbwheel.
6. Slide the safety end cap (9) up to remove. This exposes the backplane
and power interconnections.
ATTENTION
!
Do not discard the end cap. Use this end cap to cover
the exposed interconnections on the last mounting base
on the DIN rail. Failure to do so could result in
equipment damage or injury from electric shock.