Product Functional Model; Product Functional Block - LG MASTER-K 120S Series User Manual

Chapter 2 System Configuration

2.2 Product Functional Model

The following describes functional model of the MASTER-K120Sseries.

2.2.1 Product Functional Block

Product function block for the K120S series is as follows.
Power supply
Power
supply
DC24V
Power
supply
Comm. I/F
Built-in
RS-485
Built-in RS-232C I/F
Sub-system
CPU
Input
Output
Power Supply
Communication
Interface
Main Unit
Input signal
Input
•
CPU
Output
Output signal
• Signal processing function
-. Operating system function
-. Application program storage / memory function
-. Data storage / memory function
-. Application program execution function
• The input signals obtained from the machine/process to appropriate signal levels for
processing
• The output signals obtained from the signal processing function to appropriate signal
levels to drive actuators and/or displays
• Provides for conversion and isolation of the PLC system power from the main supply
• Provides the data exchange with other systems or PADT, such as KGLWIN, personal
computers
Expansion Modules
Input signal
Input
Output
Output signal
Description
2-4
Special/communication
modules