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
1-130
z
Mode 2 (H’0002): (4mA ~ +20mA)
20m A
+3 2,000
0
Offset
4m A
+1 6,000
12m A
C urren t
outpu t
D igita inpu t
l
Gai n
+3 2,767
-6,40 0
Mode 2 of CR#2~ CR#5
4mA ~ +20mA, Gain = 12mA (19,200), Offset = 4mA
(6,400).
Gain (CR#38 ~ CR#39)
The current output value corresponds to digital value
19,200.
Offset (CR#32 ~ CR#33)
The current output value corresponds to digital value
6,400.
Range of digital conversion 0 ~ +32,000
Max./Min. input range of
digital data
-6400 ~ +32,767
Adjusting A/D Conversion Curve in Voltage Input Mode 0 & Mode2
1. Description
y
CH1 example. When CR#2 is set to voltage input mode (mode 0), the Offset value
will be set to 0V (0) and the Gain value to 5V (5V/0.3215mV=16,000), i.e. input
voltage -10V ~ +10V will correspond to values -32,000 ~ +32,000.
y
When CR#2 is set to voltage input mode (mode 2), the Offset value will be set to 0V
(0) and the Gain value to 5V (5V/0.3215mV=16,000), i.e. input voltage 0V ~ +10V will
correspond to values 0 ~ +32,000.
y
If the default voltage input mode (mode 0 and mode 2) does not meet the needs of
the application, make adjustments to the A/D conversion curve. For example, Set the
Offset of CH1 to 2V (2V/0.3215mV=6,400) and the Gain to 6V
(6V/0.3215mV=19,200).
(
)
Offset
Gain
Offset
V
V
X
Y
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
×
×
=
32000
)
(
10
)
(
16000
Example: If X=6V, Y=?
(
)
16000
6400
19200
6400
32000
)
(
10
)
(
6
16000
=
−
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
×
×
=
V
V
Y
