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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
1-92
5. Program
example
Ladder diagram:
Explanation:
Set CH1 to mode 4 (current
input mode)
Set the sampling range of
CH1 to 10
Store the average value of
CH1 input signals into D40
Store the present value of
CH1 input signal into D50
M1002
M1000
K0
K1
TO
D9900
D40
K0
K20
K1
K0
K1
TO
K1600
FROM
DIV
K4
K10
D50
D0
K2
K8
MOV
D50
D50/1600 = D0 (the actual
value of the present
measured current in CH1)
3.2.2
ELCM-AN02NANN / ELCM-AN04NANN
3.2.2.1 The D/A Conversion
In industrial automation, many control signals are analog signals. The most frequently used
analog signals are voltage -10V ~ 10V and current 0 ~ 20mA. Data in ELC controllers can be
converted into analog signals for controlling analog devices via analog output modules like the
ELCM-AN02NANN and the ELCM-AN04NANN.
For example, the data range -32,000 ~ 32,000 in the ELC controller is converted into -10V ~ 10V
by one of these analog output modules. The output voltage can therefore be used to control any
standard analog device.
3.2.2.2 Introduction
ELCM-AN02NANN (ELCM-AN04NANN) analog output module receives 2 (4) groups of 16-bit
digital data from the ELC and converts the digital data into 2 (4) analog output signals (voltage or
current). In addition, all data in the analog modules can be accessed via FROM/TO instructions
in the ELC controller program. Or the output values for each channel can be directly accessed by
using MOV instructions to/from special registers D9900 ~ D9999 as decribed earlier in this
document.
3.2.2.3 Specifications
Functional
Specifications
ELCM-AN02NANN
ELCM-AN04NANN
Voltage output
Current output
Power supply voltage
24 V DC (20.4 ~ 28.8V DC) (-15% ~ +20%)
Connector
European standard fixed terminal block (Hole diameter: 5mm)
Analog output channel 2 channels or 4 channels
Range of analog output -10V ~ 10V
0 ~ 20mA
4mA ~ 20mA
Содержание ELCM Series
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