1-2SectionBasic System Configurations
9
1-2 Basic System Configurations
1-2-1 Stand-alone CPU Unit
CPU Unit with 20/30 I/O Points CPU Unit with 40 I/O Points CPU Unit with 60 I/O Points
Number of I/O points Power supply Inputs Outputs Model
20 I/O points
(12 inputs and 8 outputs)
24 VDC
24 VDC Relay CPM2A-20CDR-D
24 VDC Sinking Transistor CPM2A-20CDT-D
24 VDC Sourcing Transistor CPM2A-20CDT1-D
30 I/O points
(18 inputs and 12 outputs)
24 VDC
24 VDC Relay CPM2A-30CDR-D
24 VDC Sinking Transistor CPM2A-30CDT-D
24 VDC Sourcing Transistor CPM2A-30CDT1-D
40 I/O points
(24 inputs and 16 outputs)
24 VDC
24 VDC Relay CPM2A-40CDR-D
24 VDC Sinking Transistor CPM2A-40CDT-D
24 VDC Sourcing Transistor CPM2A-40CDT1-D
60 I/O points
(36 inputs and 24 outputs)
24 VDC
24 VDC Relay CPM2A-60CDR-D
24 VDC Sinking Transistor CPM2A-60CDT-D
24 VDC Sourcing Transistor CPM2A-60CDT1-D
1-2-2 CPU Unit, Expansion Units, and Expansion I/O Units
Up to 3 Expansion Units or Expansion I/O Units can be connected to the expan-
sion connector with expansion I/O connecting cables. (Only one Expansion Unit
or Expansion I/O Unit can be connected if an NT-AL001 Adapter is connected to
the RS-232C port because the CPU Unit’s 5-VDC power supply is limited.)
There are four types of Units available: Expansion I/O Units, an Analog I/O Unit,
Temperature Sensor Units, a CompoBus/S I/O Link Unit, and a DeviceNet I/O
Link Unit.
Expansion connector
Expansion I/O Unit or Expansion Unit
(Analog I/O Unit, Temperature Sensor
Unit, CompoBus/S I/O Link Unit, or
DeviceNet I/O Link Unit)
Expansion I/O connecting cable
A PC with 120 I/O points (the maximum) can be assembled by connecting three
Expansion I/O Units to a CPU Unit with 60 I/O points.
CPM2A-60CDR-A
(36 inputs, 24 outputs)
CPM1A-20EDR1
(12 inputs, 8 outputs)
× 1 Unit + × 3 Units = 72 inputs, 48 outputs
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