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
1-106
4. Program
example
Ladder diagram:
Explanation:
Set CH1 to mode 0
(voltage output mode)
Set the Offset value of
CH1
Set the Gain value of CH1
Disable modifying CH1
configuration
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
Adjusting D/A Conversion Curve in Current Output Mode 1 and Mode 2
1. Description
y
CH1 example, when CR#2 is set to current output mode (mode 1), the Offset value
will be set to 0mA (0) and the Gain value to 10mA (10mA/0.625
μ
A=16,000), i.e.
output current 0mA ~ +20mA will correspond to values 0 ~ +32,000.
y
When CR#2 is set to current output mode (mode 2), the Offset value will be set to
4mA (4mA/0.625
μ
A=6,400) and the Gain value to 12mA (12mA/0.625
μ
A=19,200), i.e.
input current 4mA ~ +20mA will correspond to values 0 ~ +32,000.
y
If the default current output modes (mode 1 and mode 2) is not appropriate for the
application, make adjustments to the D/A conversion curve according to application
requirements. For example, set the Offset for CH1 to 6mA (6mA/0.625
μ
A=9,600) and
the Gain to 13mA (13mA/0.625
μ
A=20,800).
( )
(
)
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
−
×
=
32000
)
(
20
16000
mA
Offset
Offset
Gain
X
mA
Y
Example: If X=16000, Y=?
( )
(
)
)
(
13
32000
)
(
20
9600
16000
9600
20800
16000
mA
mA
mA
Y
=
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
−
×
=
2. Addresses
y
X0 = On: Set the output mode for CH1 to mode 1.
y
X1 = On: Set the Offset value for CH1 to 6mA (9,600) and the Gain value to 13mA
(20,800).
