D-Digital Value; Digital/ Analog Conversion Characteristics - LG MASTER-K200S Series User Manual

Chapter 1. INTRODUCION
Analog value is a sequentially changing value such as voltage, current, temperature, speed, pressure,
flux, etc.
Temperature, for example, is sequentially changing according to the time. Because this temperature is
not inputted on the PLC directly, the same analog value of DC voltage (0 to 10V) or current (4 to 20mA)
in accordance with the temperature should be input on the PLC through transducer.
1.2.2 D - Digital Value
[Fig. 1.3] Digital quality
A/D
Conversion
Analog
0~10V,1~5V
or 4~20mA
[Fig. 1.4] conversion processing
in the PLC
1.2.3

Digital/ Analog Conversion Characteristics

1) Voltage output - G3F-DA3V
10V
5V
0V
0
time
D/A
CPU
Conversion
(Digital
)
processing
Analog
0~ ± 10V or
4~20mA
2000 4000
Digital Input Value
[Fig 1.5] D/A conversion characteristics(Voltage output)
1 - 2
Digital value is non-sequentially changing value written
as the number like 0, 1, 2, 3. The
written as digital value of 0 or 1. There are BCD value
and binary value in the range of digital value.
Analog value isn't written directly on the CPU. For
analog input to the CPU operation, analog converted
to digital value has to be input on the CPU. and for
analog output, the digital of CPU should be converted
to analog.
2.5 ㎷
5.0025V
5V
2000 2001 2002 2003
signal of on or off is
2004 2005
Digital Input