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Unit Components Section 2-2
Note Input indicators will reflect the status of the corresponding inputs
even when the PC is stopped, but the corresponding input bits will
not be refreshed.
4. Output Indicators
The output indicators are lit when the corresponding output terminal is ON.
5. Expansion I/O Connector (Input)
Connects the Expansion I/O Unit to the CPU Unit or the previous Expan-
sion Unit or Expansion I/O Unit.
Note The indicators are lit during I/O refreshing. The status of an output
indicator will also reflect the status of the corresponding output when
the output is being used as a pulse output.
6. Expansion I/O Connector (Output)
Connects the Expansion I/O Unit to the next Expansion I/O Unit or Expan-
sion Unit, if necessary. Up to 5 Expansion I/O Units and Expansion Units
can be connected to a CPU Unit. Only 10 words, however, can be allocated
for input and output.
A cover for the expansion I/O connector is not included with the Expansion
I/O Unit. Use the cover included with the CPU Unit to cover the unused ex-
pansion I/O connector on the last Expansion I/O Unit or Expansion Unit in
the PC.
7. Locking Lever
Used for securing Expansion I/O Units.
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