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■ LED-type CPU Units without Display (ZEN-@C2@@-@-V2)
CPU Units with 10 I/O Points
Left side
LED indicators
Battery Unit connector
(Remove the seal to connect
the Battery Unit.)
CPU Units with 20 I/O Points
Left side
Power supply
terminals
20C2AR-A-V2
Battery Unit connector
(Remove the seal to
connect the Battery Unit.)
LED indicators
■ Expansion I/O Units (ZEN-8E1@@)
Left side
Power supply terminals
Expansion I/O Unit connector
Precaution when Using Expansion I/O Units:
Up to three Expansion I/O Units can be connected.
When removing the Expansion Unit connector cover from the side of the CPU Unit, use a
Phillips screwdriver to remove the cover screw, and then insert a flat-blade screw driver in
the cover gap to remove the cover, as shown at the right.
18
Programmable Relay
Front
Power supply
Input
terminals
terminals
Output terminals
ZEN Support Software connector
(also used for Memory Cassette.)
Front
Input terminals
I 6 I 7
I 8
I 9 I a
I b
Q4
Q5
Q6
Q7
Output terminals
ZEN Support Software connector
(also used for Memory Cassette.)
Front
Input terminals
Output terminals
Expansion I/O Unit connector cover
Do not remove this cover until connecting
an Expansion I/O Unit.
ZEN V2 Units
Right side
Expansion Unit connector
cover
Do not remove this cover until
connecting an Expansion Unit.
Right side
Expansion Unit connector cover
Do not remove this cover until
connecting an Expansion I/O Unit.
Right side
LED Indicators
Name
LED
POWER
Green Lit
Not lit
RUN
Green Lit
Not lit
ERROR
Red
Lit
Not lit
Phillips screwdriver
Status
Power is ON.
Power is OFF.
Operating
(RUN)
Stopped
(STOP)
Error
occurred.
Normal
Flat-blade screwdriver
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