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9 change the soft components

9-1．Function Summary

For general PLC, when the internal optical couples, relays or transistors are damaged, the

corresponding input/output terminals will be faulty. The only solution is to revise the program.

This is troublesome for the user and affects the production greatly;

XC series PLC breaks the one-to-one correspondence. The users only need to change the soft

component’s value by HMI, then the corresponding terminal will activate. Take advantage of this

improvement, the user need not replace the PLC or modify the original program in the condition

of PLC terminals damaged.

Before (Complicate and not effective)

Now (Simple, fast and effective)

Output Y3 is

broken

Solution 1

Revise the complicated

program

Solution 2

Change PLC

Output Y3 is

broken

Solution

Change the mapping

relation of Y3 and its

corresponding soft

component; use other empty

point, like Y4

Xinje XC1 Series User Manual

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