Omron CQM1H - 08-2005, Руководство по эксплуатации

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193
Command 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: C40
j
•
X2 Scaling Value Set: C41
j
•
Y1 Scaling Value Set: C42
j
•
Y2 Scaling Value Set: C43
j
Each of the above scaling values has the suffix
j
, 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 212 for the details of the scaling value set command.
Setting Example In this example, the following scaling values are selected for the Unit.
X1: 0400
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.
Operation
1, 2, 3... 1. The input word reads 1254, which is the present scaled conversion data,
and the output word reads 0000.
c100 c001
0000 1254
Output word Input word
2. Set the command code C400 for the X1 value. To input the letter C with the
Programming Console, press the Shift and 2 Keys. The input word will be set
to the response C400.
CHG
SHIFT
C
2
C
E
4
A
0
A
0
WRITE
c100 c001
C400 C400
3. Set 0400 to the output word.
4. When the Unit correctly receives the command, the input word will be set to
0400.
CHG
A
0
E
4
A
0
A
0
WRITE
c100 c001
0400 0400
5. Input the command code C410 for the X2 value. The input word will be set to
the response C410.
CHG
SHIFT
C
2
C
E
4
B
1
A
0
WRITE
c100 c001
C410 C410
6. Set 2000 to the output word.
Scaling
Section 5-4