Lg Electronics 120S 사용자 설명서

 

2-4 

 

 

 

          The following describes functional model of the MASTER-K120Sseries. 

 

                Product function block for the K120S series is as follows. 

 

 

 

 

Main Unit 

 

 

 

Expansion Modules

 

 

 

        Power supply       Input signal                Input signal 

 

 

 

 

 

       

 

 

 

 

 

              Built-in RS-232C I/F    Output signal                Output signal 

 

 

 

Sub-system 

Description 

CPU 

• Signal processing function 
  -. Operating system function 

  -. Application program storage / memory function 

  -. Data storage / memory function 

  -. Application program execution function 

Input 

• The input signals obtained from the machine/process to appropriate signal levels for 

processing 

Output 

• The output signals obtained from the signal processing function to appropriate signal 

levels to drive actuators and/or displays 

Power Supply 

• Provides for conversion and isolation of the PLC system power from the main supply 

Communication 

Interface 

• Provides the data exchange with other systems or PADT, such as KGLWIN, personal 

computers 

Built-in 
RS-485

 

 

 

 

Special/communication 

modules 

Power 
supply

Comm. I/F

Input  

Output  

Input  

Output 

CPU  

• 

DC24V 

Power 
supply