1-2
Section
Basic System Configurations
10
A PC with 6 analog inputs and 3 analog outputs (the maximum) can be as-
sembled by connecting three Analog I/O Units. (Only one Analog I/O Unit can be
connected if an NT-AL001 Adapter is connected to the CPU Unit’s RS-232C
port.)
A PC with up to 6 temperature inputs for input from thermocouples or platinum
resistance thermometers can be assembled by connecting Temperature Sensor
Units.
CompoBus/S I/O Link Units (Slave Units) can be connected to a CPU Unit. I/O
data (8 inputs and 8 outputs) is transferred between the CPU Unit and the area
allocated to the CompoBus/S Slave. (The I/O data exchanged with the Slave is
internal data; there are no external input or output terminals.)
DeviceNet I/O Link Units can be connected to a CPU Unit. I/O data (32 inputs
and 32 outputs) is transferred between the CPU Unit and the area allocated to
the DeviceNet I/O Link Unit. (The I/O data exchanged with the Slave is internal
data; there are no external input or output terminals.)
Note
1. Different types of Expansion I/O Units or Expansion Units can be connected
at the same time. For example, an Expansion I/O Unit, an Analog I/O Unit, a
CompoBus/S I/O Link Unit, and DeviceNet I/O Link Unit can be connected to
the CPU Unit.
2. When an NT-AL001 Adapter is connected to the RS-232C port, only one Ex-
pansion Unit or Expansion I/O Unit can be connected to the CPU Unit be-
cause of power supply limitations.
Expansion I/O Units
8-point Input Unit
8-point Output Unit
20-point I/O Unit
Unit
Max. number
of Units
Inputs
Outputs
Model
Expansion
I/O Units
20 I/O
points
3 Units max.
(See note )
24 VDC
Relays
CPM1A-20EDR1
I/O Units
points
12 inputs
(See note.)
24 VDC
Sinking transistors
CPM1A-20EDT
12 inputs
8 outputs
24 VDC
Sourcing transistors
CPM1A-20EDT1
8 inputs
24 VDC
---
CPM1A-8ED
8 outputs
---
Relays
CPM1A-8ER
p
---
Sinking Transistors
CPM1A-8ET
---
Sourcing Transistors
CPM1A-8ET1
Note
Only one Expansion I/O Unit can be connected if an NT-AL001 Adapter is con-
nected to the CPU Unit’s RS-232C port.
