Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 204

Analog I/O Units
Using Analog I/O
Connect the Unit.
Set the I/O ranges.
Wire the analog I/O.
Program operation in the
ladder program.
Analog Inputs
CPU Unit
184
The open-circuit detection function is enabled or cleared when data is con-
verted. If the input returns to the convertible range, the open-circuit detection is
cleared automatically and the output returns to the normal range.
Connect the Analog I/O Unit.
Analog inputs: 0 to 5 VDC, 1 to 5 VDC, 0 to 10 VDC,
Analog output: 1 to 5 VDC, 0 to 10 VDC, –10 to 10 VDC,
Set inputs as voltage or analog and set the averaging function.
Connect analog I/O devices.
Write the range code.
Analog inputs: Read converted data.
Analog output: Write set values.
Ladder program
(21) MOVE instruction
Writes the range code.
Reads the converted
values.
Where "m" is the last input word and "n" is the
last output word allocated to the CPU Unit, or
previous Expansion Unit or Expansion I/O Unit.
–10 to 10 VDC, 0 to 20 mA, or 4 to 20 mA
0 to 20 mA, or 4 to 20 mA
Analog I/O Unit
Word (n + 1) Range code
Analog input 0
Word (m + 1)
converted value
Analog input 1
Word (m + 2)
converted value
Analog devices
Temperature sensor
Pressure sensor
Speed sensor
Flow sensor
Voltage/current meter
Other
Section 3-1