1-1SectionCPM2A Features and Functions
2
1-1 CPM2A Features and Functions
1-1-1 CPM2A Features
The CPM2A PCs incorporate a variety of features in a compact Unit, including
synchronized pulse control, interrupt inputs, pulse outputs, analog settings, and
a clock function. Also, the CPM2A CPU Unit is a stand-alone Unit that can han-
dle a broad range of machine control applications, so it is ideal for use as a built-
in control unit in equipment.
The full complement of communications functions provide communications with
personal computers, other OMRON PCs, and OMRON Programmable Termi-
nals. These communications capabilities allow the user to design a low-cost dis-
tributed production system.
The CPU Unit contains 20, 30, 40, or 60 I/O points
and Expansion I/O Units can be added to provide a
total I/O capacity of up to 120 I/O points. Analog I/O
Units, Temperature Sensor Units, and CompoBus/S
I/O Link Units can also be connected.
Peripheral Port
Programming Devices are compatible with
other models of OMRON PCs. This port
can also be used for Host Link or no-proto-
col communications.
RS-232C Port
This port can be used for a Host Link,
no-protocol, 1:1 PC Link, or 1:1 NT Link
communications.
Basic Functions
The CPM2A PCs are one-piece PCs with 20, 30, 40, or 60 built-in I/O terminals.
There are 3 types of outputs available (relay outputs, sinking transistor outputs,
and sourcing transistor outputs) and 2 types of power supplies available
(100/240 VAC or 24 VDC).
Up to 3 Expansion I/O Units can be connected to the CPU Unit to increase the
PC’s I/O capacity to a maximum of 120 I/O points. There are 3 types of Expan-
sion I/O Units available: a 20-point I/O Unit, an 8-point Input Unit, and an 8-point
Output Unit. The maximum I/O capacity of 120 I/O points is achieved by con-
necting three 20-point I/O Units to a CPU Unit with 60 built-in I/O terminals.
Up to 3 Analog I/O Units can be connected to provide analog inputs and outputs.
Each Unit provides 2 analog inputs and 1 analog output, so a maximum of 6 ana-
log inputs and 3 analog outputs can be achieved by connecting 3 Analog I/O
Units. (Time-proportional control can be performed by combining the analog I/O
points with the PID(––) and PWM(––) instructions.)
• The analog input range can be set to 0 to 10 VDC, 1 to 5 VDC, or 4 to 20 mA
with a resolution of 1/256. (The open-circuit detection function can be used
with the 1 to 5 VDC and 4 to 20 mA settings.)
• The analog output range can be set to 0 to 10 VDC, –10 to 10 VDC, or 4 to
20 mA with a resolution of 1/256.
A Temperature Sensor Unit can be connected to provide up to 6 inputs for tem-
perature input from sensors, such as thermocouples or platinum resistance
CPU Unit Variations
Expansion I/O Units
Analog I/O Units
Temperature Sensor
Units
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