RIO Cabling
The following rules apply to RIO cable connections:
v I/O drawers 0 and 1 are connected using the first RIO loop, which uses RIO ports 0
and 1 on the CEC drawer.
v The primary I/O drawer must be installed and connected to RIO port 0 of the CEC
drawer. The connection must be made from RI0 port 0 of the CEC drawer to RIO
port 0 of the primary I/O drawer. This connection is required to make the primary
drawer the first drawer in the loop, which allows the firmware to initialize the system.
The following figures provide cabling examples for all valid cabling configurations.
Match your configuration to the correct figure and connect your RIO cables as shown.
CEC Drawer Attached to One I/O Drawer
R1
R0
R0
R1
Primary I/O
Drawer
CEC
Drawer
50 Service Guide
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