Omron CQM1H series - Programming and Adjustment

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3-2-2 Bit Allocation
Bit
Word
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
n
n + 1
Output 1 Output data
Output 2 Output data
Note The shaded parts do not have any influence on the output voltage (current) of the
Analog Output Unit. All data is output in binary. Use a program to convert the
data from BCD.
3-3 Programming and Adjustment
3-3-1 Programming
Data is output to the words that have been allocated to the Output Unit. For ex-
ample, to output DM data, use the MOV (21) instruction as shown in the following
ladder diagram.
* “n” indicates the allocated word for analog output 1.
MOV(21)
DM0000
n
Input condition
Scaling The conversion of a value in a certain range to an output voltage or current in a
certain range is called scaling.
An example for the conversion of data using the SCL3 and APR instructions is
provided below. The SCL3 instruction cannot be used with the CQM1-CPU11 or
CQM1-CPU21.
By using the SCL3 and APR instructions, output data conversion from the PC’s
data and data output can be performed simultaneously.
SCL3 Instruction The following is a program example for BCD output data stored in DM 0000.
* “n” indicates the allocated word for analog output 1.
CLC(41)
SCL3
DM 0000
DM 0100
n
Input condition
Programming and Adjustment
Section 3-3