Omron C120 System Manual page 44

Block Diagrams
I/O Link Unit
I/O bus
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O bus
Work
memory
RUN output
Repeater
output
Used when
Link Adapter
is connected.
Optical I/O Unit
I/O bus
Terminator
setting
RUN
output
AC power
source
30
System
CPU
memory
SW1
I/O
interface
SW2
Fiberoptic/
electric
converter
Serial/
parallel
converter
I/O bus Work
memory
Power
supply
Data
memory
C-series
interface
Transmitting/
Error
16-pt input
16-pt output
16-pt I/O
32-pt output
System
CPU
memory
Transmitting/ Error
I/O
Word setting
interface
+5 V
+24 V
Power
source
Section 3-1
C-series
I/O bus