Problem: A red I/O-table error bar is blinking at the bottom of CX Programmer screen.

Reason: CX Programmer and PLC have different I/O hardware configuration

Solution:

1. Change to Online Mode: PLC -> Work Online (CTRL-W)
2. Change PLC to Program Mode: PLC -> Operating Mode -> Program (CTRL-1)
3. Open I/O Hardware Configuration window: PLC -> Edit -> I/O Table
4. In the opened window, remove current I/O definition: Options -> Delete (if Delete cannot be selected, go through the previous stages again)
5. Load the I/O Configuration from the PLC: Options -> Transfer from the PLC
6. If the fault is still not cleared, reset the PLC by switching the power off for at least ten seconds