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Multilevel Systems
C200H CPU Rack
Wired Master
Optical Master
Wire cable
Expansion I/O Rack
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Another aspect of Remote I/O Systems demonstrated by this diagram is the
presence of Expansion I/O Racks, both connected to a CPU Rack and to
Slave Racks. Although normally not shown in system diagrams for Link Sys-
tems, Expansion I/O Racks can be used to increase the number of I/O Units
mountable at any one location.
Wire cable
Optical cable
C200H Wired Slave Rack
Wire cable
Expansion I/O Rack
C500 Wired Slave Rack
Wired
Wire cable
Slave
Remote
Terminal
Remote
Terminal
C200H Optical Slave Rack
Wire cable
Optical
Master
Wired
Slave
Wire cable
C200H Optical Slave Rack
Wire cable Wire cable
Expansion I/O Rack
Section 2-5
Optical
Slave
Optical cable
C2000H
CPU Rack
I/O Link Unit
Optical cable
Optical I/O Units
Optical cable
Optical cable
Optical Slave
19
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