Omron CRT1 - 10-2008 Operation Manual page 445

Analog I/O Slave Unit Functions
Scaling
Default Scaling
422
3. Select the Tab Page for the input where moving average processing is to
be performed, and select Moving Average under the Function Choice
heading
4. Return to the General Tab Page, click the Transfer [PC to Unit] Button to
download the data, and then click the Reset Button to reset the Unit.
5. Click the OK Button and exit the window.
The default setting is used to perform AD conversion of analog input values,
scaling them to a count between 0 and 6,000. Scaling can be used to change
scaled values that correspond to the input signal range into other values
required by the user (industry unit values). Scaling also eliminates the need
for ladder programming in the Master Unit to perform math operations. The
following two methods of input scaling can be used.
Analog input values (count values) are converted to the original voltage and
current values. The units used are mV or µ A. When default scaling is
selected, scaling is performed according to the range used, as shown in the
following table.
Input 0 to 5 V 0 to 10 V
range
100% 5,000 mV 10,000
mV
0% 0000 mV 0000 mV
Discon- 0000 hex 0000 hex
nected
line
−10 to 10 V
1 to 5 V
(CRT1-
AD04 only)
5,000 mV 10,000 mV
–10,000 mV 0000 µA
1,000 mV
7FFF hex 0000 hex
Section 11-4
0 to 4 to
20 mA 20 mA
20,000 µA 20,000 µA
4,000 µA
0000 hex 7FFF hex