Adjusting A/D Conversion Curve In Current Input Mode 4, Mode 5, And Mode 6 - Delta DVP-ES2 Manual

2.
Adjusted Curve
Digital
output
-5V
3.
Devices

X0 = On: Set the input mode of the signals in CH2 as mode 1.

X1 = On: Set Offset value of CH2 as 1V (6,400) and Gain value as 3V (19,200).

M0 = On: Disable CH2 set value changing.
4.
Program explanation

When X0 = On, set CR#3 as K1 (H'0001) and the signal input mode in CH2 as mode 1 (voltage input
mode).

When X1 = On, write K6,400 (Offset value of CH2) into CR#29 and K19,200 (Gain value of CH2) into
CR#35.

When X1 goes from On to Off, set M0 = On to disable the adjustment on A/D conversion curve. Write K2
(H'2) into CR#40 b1=1 to disable CH2 set value changing.
5.
Program example
Ladder diagram:
X0
TOP
X1
TOP
TOP
X1
SET
M0
TOP
1.7.5

Adjusting A/D Conversion Curve in Current Input Mode 4, Mode 5, and Mode 6

1.
Description

Take 04AD CH3 for example. When CR#4 is set as current input mode (mode 4), the Offset value will be
set as 0mA (0) and Gain value as 10mA (10mA/0.625μA=16,000), i.e. input current -20mA ~ +20mA will
correspond to values -32,000 ~ +32,000.

When CR#4 is set as current input mode (mode 5), the Offset value will be set as 0mA (0) and Gain value
as 10mA (10mA/0.625 A=16,000), i.e. input current 0mA ~ +20mA will correspond to values 0 ~ +32,000.

When CR#4 is set as current input mode (mode 6), the Offset value will be set as 4mA
(4mA/0.625μA=6,400) and Gain value as 12mA (12mA/0.625μA=19,200), i.e. input current 4mA ~
+20mA will correspond to values 0 ~ +32,000.
DVP-ES2 Module Manual
+32000
Mode 1
+16000
2.5V
0
5V
Offset Gain
-16000
Voltage input
-32000
K0 K3 H1
K0 K29 K6400
K0 K35 K19200
M0
K0 K40 H2
1
Analog Input Module DVP04AD-E2
+32000
Digital
output
+16000
-5V
Explanation:
Set CH2 as mode 1 (voltage input mode)
K1
K1
Set the Offset value of CH2
Set the Gain value of CH2
K1
Disable CH2 set value changing
K1
1V 3V
0
5V
Offset
Gain
-16000
Voltage input
-32000
1-15