Delta DVP-ES2 Manual

1 Analog Input Module DVP04AD-E2
4. Program explanation
 When X0 = On, set CR#2 as K0 (H’0000) and the signal input mode at CH1 as mode 0 (voltage input
mode).
 When X1 = On, write K6,400 (Offset value of CH1) into CR#28 and K19,200 (Gain value of CH1) into
CR#34.
 When X1 goes from On to Off, set M0 = On to disable the adjustment on A/D conversion curve. Write K1
(H’1) into CR#40 b0=1 to disable
CH1 set value changing.
5. Program example
Ladder diagram: Explanation:
Set CH1 as mode 0 (voltage input mode)
Set the Offset value of CH1
Set the Gain value of CH1
Disable CH1 set value changing
X0
M0
X1
K0
K34 K1
K0 K40
K1
K0
K1
TOP
K0
K1
M0
TOP
TOP
TOP
X1
SET
H0
K6400
K19200
H1
K2
K28
1.7.4 Adjusting A/D Conversion Curve in Voltage Input Mode 1 & Mode 3
1.
Description
 Take 04AD CH2 for example, when CR#3 is set as voltage input mode (mode 1), the Offset value will be
set as 0V (0) and Gain value as 2.5V (2.5V/0.15625mV=16,000), i.e. input voltage -5V ~ +5V will
correspond to values -32,000 ~ +32,000.
 When CR#3 is set as voltage input mode (mode 3), the Offset value will be set as 0V (0) and Gain value as
2.5V (2.5V/0.15625mV=16,000), i.e. input voltage 0V ~ +5V will correspond to values 0 ~ +32,000.
 If you cannot use the default voltage input mode (mode 1 and mode 3), you can make adjustments on the
A/D conversion curve according to your actual needs. For example, set the Offset of CH2 as 1V
(1V/0.15625mV=6,400) and Gain as 3V (3V/0.15625mV=19,200).

OffsetGain
Offset
V
VX
Y











32000
)( 5
)(
16000
Example: If X=3V, Y=?

16000
640019200
640032000
)( 5
)( 3
16000












V
V
Y
 You only need to set up the A/D conversion curve for once. Set up CR#40 (Set value changing prohibited)
to prevent incorrect operations.
DVP-ES2 Module Manual
1-14

Delta DVP-ES2 Specifications

General

Brand	Delta
Model	DVP-ES2
Category	Controller
Language	English