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P004021: Address has been assigned more than once within a CPU

Cause

An address was assigned multiple times within a CPU.

Solution

  1. Change the addresses of the affected PLC connection points by means of the Properties <...> dialog so that each address within a CPU is uniquely addressed. (Assign the CPUs to a PLC box by setting the CPU and CPU: Name properties).
  2. If required, start a new check run.

Notes:

  • This check run is also output when multiple addressed PLC connection points are not assigned to any CPU.
  • The check run also checks PLC connection points without DT. If multiple addressed PLC connection points without DT were determined, delete the PLC address at these connection points.