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John JamesJul 30, 2025
Why does my Omron SYSMAC C200H-NC112 Control Unit show 'Too many Special I/O Units'?
- RRobert BartonJul 30, 2025
If an Omron Control Unit indicates too many Special I/O Units, it means the same unit number has been assigned to more than one I/O Unit, preventing PC operation. To resolve this, set unit numbers so that each is used only once. You can access unit numbers by reading the I/O table.
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