Omron ZEN Operation Manual page 43

Nomenclature and Basic Operation
Models with 20 I/O Points
Left Side
Battery Unit
connector
(Remove the
seal to connect
the Battery Unit.)
LED Indicators
Expansion I/O Units
Left Side
Front
Power supply
Input terminals
terminals
20C2AR-A-V2
Personal computer
connector (also used for
Memory Cassette.)
LED indicators
Name Color
POWER Green
RUN Green
ERROR Red
Input terminals
Output terminals
Expansion Unit
connector
I 6 I 7 I 8 I 9 I a I b
Q4 Q5 Q6 Q7
Output terminals
Meaning
Lit Power supplied
Not lit No power
Lit Operating (RUN)
Not lit Stopped (STOP)
Lit Error
Not lit Normal
Front
Expansion Unit connector cover.
Section 1-3
Right Side
Expansion Unit
connector cover
Remove this cover to
connect Expansion I/O Unit.
Right Side
Remove this cover to
connect Expansion I/O Unit.
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