Omron SYSMAC CPM2B Operation Manual page 57

Board Components and their Functions
CPM2B-64EDT 64-point Expansion I/O Boards with Transistor Outputs
1,2,3...
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1. Input connector
3. Input indicators
2. Output terminals
4. Output indicators
1. Input Connector
Connects the Expansion I/O Board to external input devices.
2. Output Terminals/Connector
Connects the Expansion I/O Board to external output devices.
3. Input Indicators
The input indicators are lit when the corresponding input terminal is ON.
4. Output Indicators
The output indicators are lit when the corresponding output terminal is ON.
5. Expansion I/O Connector
Connects the Expansion I/O Board to the CPU Board or the previous Ex-
pansion Unit or Expansion I/O Unit. Up to 3 Expansion I/O Boards can be
connected to a CPU Board (unless 64-point Expansion I/O Boards are
used, in which case only up to 2 Boards can be connected). An Expansion
I/O Cable is included with each Expansion I/O Board.
Note Do not touch the cables during operation to prevent unexpected op-
eration due to static discharge.
5. Expansion I/O
connector
Section 2-2
39