Omron CP1H-CPU - 05-2006 Operation Manual page 427

Analog Output Units
Procedure
Writing D/A Conversion
Data
396
0 to 20 mA
The hexadecimal values 0000 to 1770 (0 to 6000) correspond to an analog
current range of 0 to 20 mA. The entire output range is 0 to 21 mA.
21 mA
20 mA
0000 (0)
8000
4 to 20 mA
The hexadecimal values 0000 to 1770 (0 to 6000) correspond to an analog
current range of 4 to 20 mA. The entire output range is 3.2 to 20.8 mA.
20.8 mA
20 mA
4 mA
8000 FED4
( 300)
Connect and wire Units.
Create a ladder program
CPU Unit
Ladder program
MOV
Writes the range code.
Writes the converted
values.
1770
189C
7FFF
0 mA
(6000)
(6300)
3.2 mA
1770 189C
7FFF
0 mA
(6000) (6300)
•
Connect Analog Output Units.
•
Wire to analog input devices.
•
Write range code to output words (n+1, n+2).
•
Set use of outputs.
•
Select output signals using range codes.
•
Write D/A conversion values to output words
(n+1 to n+4).
Analog Output Unit
(n+1) C H Range code (outputs 1, 2)
(n+2) CH Range code (outputs 3, 4)
(n+1) CH Analog output 1 conversion value
Analog output 2 conversion value
(n+2) CH
(n+3) CH Analog output 3 conversion value
(n+4) CH Analog output 4 conversion value
Where "n" is the last output word
allocated to the CPU Unit, or
previous Expansion Unit or
Expansion I/O Unit.
Section 7-3
Conversion
Data
Hexadecimal
(Decimal)
Conversion
Data
Hexadecimal
(Decimal)
Analog devices
Adjustment equipment
Servo Controller
Variable speed device
Recorder
Other