33
2-3-3 I/O Interface Units
One
I/O Interface Unit is needed
on the Expansion CPU Rack and on each Ex
-
pansion I/O Rack. Two models of I/O Interface Unit are available, the
CV500-II101
for the Expansion
CPU Rack and the CV500-II201 for Expansion
I/O Racks. An I/O Interface Unit enable data communication between Racks.
The I/O Interface Unit must be mounted to the leftmost slot on the Expansion
CPU and Expansion I/O Backplane.
CV500-II101
I/O
connectors
The connectors
are functionally identical and ei
-
ther can be used to connect to
the preceding or succeeding
Rack.
CPU bus connector
Display
Rack number switch
Display mode switch
Changes the
data displayed on the display
.
CV500-II201
I/O Connectors Both connectors
are functionally identical and ei
-
ther can be used to connect to
the preceding or succeeding
Rack.
Display
Rack number switch
Display mode switch
Changes the data dis
-
played on the display
.
Peripheral device connec
-
tor cover
Attach
a T
ermination Resistance Unit to the unused I/O Connecting Cable
Con
-
nector of the last Rack in a each series leading from the CPU Rack.
Rack Components Section 2-3
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