User Devices; Input (X); Output (Y) - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

21.2

User Devices

This section explains user devices.

Input (X)

Provides the CPU module with commands and data by external devices such as push buttons, selector switches, limit
switches, digital switches, etc.
Push-button switch
Selector switch
Input (X)
Digital switch
1 2 3
Concept of input
You can think each input point as having a virtual relay Xn built into a single CPU module. The program uses NO/NC contact
of Xn.
Virtual relay
PB1
PB2
PB16
Input ladder (external device)

Output (Y)

Outputs program control results to external signal lamps, digital indicators, contactors, solenoids, etc.
CPU Module
CPU Module
X0
X0
X1
X1
X7
X7
Program
Signal lamp
Digital display
Output (Y)
Contactor
PLCs
21 DEVICES
21.2 User Devices
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