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
1-82
Ladder diagram:
Explanation:
Save CH1 average input value of
Module#0 to D0
Save CH2 average input value of
Module#1 to D2
M1000
D9922
D4
D9900
MOV
D9911
MOV
MOV
D0
D2
Save CH3 average input value of
Module#2 to D4
3.2.1.9 A/D Conversion Curve
Adjust the conversion curves according to the application requirements by changing the Offset
values (CR#28 ~ CR#31) and Gain values (CR#34 ~ CR#37).
Gain: The corresponding voltage/current input value when the digital output value = 16,000.
Offset: The corresponding voltage/current input value when the digital output value = 0.
z
For voltage input Mode0/Mode2: 0.3125mV = 20V/64,000 = 10V/32,000
Equation:
(
)
Offset
Gain
Offset
V
V
X
Y
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
×
×
=
32000
)
(
10
)
(
16000
Y=Digital output, X=Voltage input
z
For voltage input Mode1/Mode3: 0.15625mV
= 10V/64,000 = 5V/32,000
Equation:
(
)
Offset
Gain
Offset
V
V
X
Y
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
×
×
=
32000
)
(
5
)
(
16000
Y=Digital output, X=Voltage input
