3. AIAO Units
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1-131
2. Addresses
y
X0 = On: Set the input mode for the signals at CH1 to mode 0.
y
X1 = On: Set the Offset value oforCH1 to 2V (6,400) and the Gain value to 6V
(19,200).
y
M0 = On: Disable CH1 configuration changes.
3. Program
description
y
When X0 = On, set CR#2 to K0 (H’0000) and the signal input mode for CH1 to mode
0 (voltage input mode).
y
When X1 = On, write K6,400 (Offset value for CH1) into CR#28 and K19,200 (Gain
value for CH1) into CR#24.
y
When X1 goes from On to Off, set M0 = On to disable modifications to the A/D
conversion curve. Write K1 (H’1) into CR#40 b0=1.
4. Program
example
Ladder diagram:
Explanation:
Set CH1 to mode 0
(voltage input mode)
Set the Offset value for
CH1
Set the Gain value for
CH1
Disable changing 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 A/D Conversion Curve in Voltage Input Mode 1 & Mode 3
1. Description
y
CH2 example. When CR#3 is set to voltage input mode (mode 1), the Offset value
will be set to 0V (0) and the Gain value to 2.5V (2.5V/0.15625mV=16,000), i.e. input
voltage -5V ~ +5V will correspond to values -32,000 ~ +32,000.
y
When CR#3 is set to voltage input mode (mode 3), the Offset value will be set to 0V
(0) and the Gain value to 2.5V (2.5V/0.15625mV=16,000), i.e. input voltage 0V ~ +5V
will correspond to values 0 ~ +32,000.
y
If the default voltage input modes (mode 1 and mode 3) do not meet the application
requirements, make adjustments to the A/D conversion curve. For example, set the
Offset for CH2 to 1V (1V/0.15625mV=6,400) and the Gain to 3V
(3V/0.15625mV=19,200).
Содержание ELCM Series
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