Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 189

Analog I/O Units
Using Analog I/O
Set the I/O range
Connect the Unit
Wire the analog I/O
Create a ladder program
Analog Inputs
CPU Unit
Analog inputs:
Analog outputs:
Connect the Analog I/O Unit.
Connect an analog input device.
Write the range code.
Analog input:
Analog output:
Ladder program
(21) MOVE instruction
Writes the range code.
Reads the conversion
value.
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.
0 to 10 V, 1 to 5 V, or 4 to 20 mA
0 to 10 V, –10 to +10 V, or 4 to 20 mA
Read converted data.
Write set value.
Analog I/O Unit
Word (n + 1) Range code
Analog input 1
Word (m + 1)
conversion value
Analog input 2
Word (m + 2)
conversion value
Analog devices
Temperature sensor
Pressure sensor
Speed sensor
Flow sensor
Voltage/current meter
Section 3-1
169