E L C O p e r a t i o n M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003006E
1-48
to 20mA (K1,000).
•
M0=On: Disable modifying the A/D conversion curve.
3. Program
Description
•
When X0 = On, set CR#1 to K1755 (H’6DB, i.e. 0000 0110 1101 1011 in binary) and
the signal input mode for CH1 ~ CH4 to mode 3 (current input mode).
•
When X1 = On, write K250 (OFFSET value for CH1 ~ CH4) into CR#18 ~ 21 and
K1,000 (the GAIN values for CH1 ~ CH4) into CR#24 ~ 27.
•
When X1 goes from On to Off, set M0 = On to disable modifying the A/D conversion
curve. Write K585 (H’249, i.e. 0000 0010 0100 1001 in binary) into CR#33 to disable
modifying the A/D conversion curve for CH1 ~ CH4.
4. Program
example
Ladder diagram:
Explanation:
Set CH1 ~ CH4 to mode 3
(current input mode)
Set the OFFSET value for
CH1 ~ CH4
Set the GAIN value for CH1
~ CH4
X0
M0
X1
K0
K24
K4
K0
K33
K1
K0
K4
TOP
K0
K4
M0
TOP
TOP
TOP
X1
K1
H6DB
K18
K250
K1000
SET
H249
Disable modifying the A/D
conversion curve
Example #3: Adjusting the D/A Conversion Curve for the Voltage Output Mode
1. Description:
Example for ELC-AN06AANN.
•
When CR#1 (b15 ~ b12) is set to voltage output mode (mode 0), the OFFSET value
will be set to 0V (K0) and the GAIN value to 5V (K2,000), i.e. output voltage 0 ~ +10V
will correspond to decimal values 0 ~ +4,000.
•
When CR#1 (b15 ~ b12) is set to voltage output mode (mode 1), the OFFSET value
will be set to 2V (K800) and the GAIN value to 6V (K2,400), i.e. output voltage 2V ~
+10V will correspond to decimal values 0 ~ +4,000.
•
If the default voltage input mode (mode 0 and mode 1) does not meet the application
requirements, adjustments can be made to the D/A conversion curve. For example,
Set the OFFSET for CH5 ~ CH6 to 0V (K0) and the GAIN to 2.5V (K1,000).
•
The D/A conversion curve only needs to be configured once.
2. Addresses
Used:
•
X0=On: Set the output mode for CH5 ~ CH6 to mode 1.
•
X1=On: Set the OFFSET values for CH5 ~ CH6 to 0V (K0) and the GAIN values to