LS Industrial Systems XBC-DR10E - Page 17

Chapter 1 Introduction
XBC E-Type Main Unit 1-7 Ver. 1
Terms Definition
Sink Input
Current flows from the switch to the PLC input terminal if an input
signal turns on.
Input
Sensing
PLC
Module
Input
Circui t
Power
Supply
Common
Current
Optical
Isolation
Input Sensing
Switch
Source Input
Current flows from the PLC input terminal to the switch after an
input signal turns on.
Input
Sensing
PLC
Module
Input
Circui t
Power
Supply
Common
Current
Optical
Isolation
Input Sensing
Switch
Sink Output
Current flows from the load to the output terminal and the PLC
output turns on.
Output
Switching
PLC
Module
Output
Circui t
Power
Supply
Common
Current
Optical
Isolation
Load
Source Output
Current flows from the output terminal to the load and the PLC
output turns on.
Output
Switching
PLC
Module
Output
Circui t
Power
Supply
Common
Current
Optical
Isolation
Load
−