Omron CQM1 Operation Manual page 222

Scaling
–9.999 V –5 V
Command
Setting Example
Operation
1,2,3...
The graph below shows the relationship between the actual input values and
the internal data.
(9999)
(5000)
(2000)
(1000)
(400)
(–5000)
(–9999)
The scaling value set command consists of a command code and parameter.
The following command codes are used to set the X1, X2, Y1, and Y2 scaling
values.
• X1 Scaling Value Set:
• X2 Scaling Value Set:
• Y1 Scaling Value Set:
• Y2 Scaling Value Set:
Each of the above scaling values has the suffix @, which should be replaced
with 0 if the value is positive and F if the value is negative when they are input.
The parameter range of each of the above scaling values is 0000 to 9999.
Refer to page 222 for the details of the scaling value set command.
In this example, the following scaling values are selected for the Unit.
X1: 400
X2: 2000
Y1: 0000
Y2: 1000
This means an input of 4 to 20 mA is scaled to binary data of "0 to 1000" and
then converted into percentage data to the first decimal place.
In this example, the factory-set operation mode and scaling values have been
set.
1. The input word reads 1254, which is the present scaled conversion data,
and the output word reads 0000.
C40@
C41@
C42@
C43@
Output word Input word
? ?
#"
Section 5-4
Input
203