Hardware reference guide

Intelligent/Special Purpose
35013379 11/2011 383
z The Backplane Expander will not be recognized by the programming panel
software. It will look like an unfilled slot in the PLC I/O map.
z The Backplane Expander will allow configuration or I/O mapping of additional
modules in the local drop containing a CPU or RIO drop adapter up to the drop
word limit or physical slot address limitation.
z Option modules, such as NOMs, NOEs and CHSs must reside in the primary
backplane.
z Any Interrupt module can be located in the secondary backplane, but the interrupt
mode is not supported.
z The Backplane Expander module cannot be Hot Swapped into a powered
backplane without first attaching the communications cable. To install the
Backplane Expander in a powered backplane, first connect the cable to the
Backplane Expander module, then mount the module into the powered
backplane.