32
CPU Units with 20 I/O Terminals
CPM1A-20CDR-/20CDT-/20CDT1-CPM1A-20CDR--V1/20CDT--V1/20CDT1--V1
CPU Units with 30 I/O Terminals
12. Expansion
I/O Unit
connector
CPM1A-30CDR-/30CDT-/30CDT1-CPM1A-30CDR--V1/30CDT-/-V130CDT1--V1
12. Expansion
I/O Unit
connector
CPU Units with 40 I/O Terminals
12. Expansion
I/O Unit
connector
CPM1A-40CDR-/40CDT-/40CDT1-CPM1A-40CDR--V1/40CDT--V1/40CDT1--V1
12. Expansion
I/O Unit
connector
CPU Unit Component Descriptions
1, 2, 3... 1. Power Supply Input Terminals
Connect the power supply (100 to 240 VAC or 24 VDC) to these terminals.
2. Functional Earth Terminal (
) (Pre-V1 CPU Units only)
Be sure to ground this terminal (AC-type PCs only) to enhance immunity to
noise and reduce the risk of electric shock.
3. Protective Earth Terminal (
)
Be sure to ground this terminal to reduce the risk of electric shock.
4. Power Supply Output Terminals
CPM1A PCs are equipped with these 24-VDC power output terminals to
supply power to input devices. (AC-type PCs only.)
5. Input Terminals
Connect the Unit to external input devices.
6. Output Terminals
Connect the Unit to external output devices.
Unit Components
Section 2-2
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