IED comparison is used for comparing configurations of two IEDs of the same kind. Comparison can be made offline regardless of the IEDs being in the same PCM600 project or not. Additionally, the configuration of an IED can be compared to a loose PCMI file. When connected to the IED, it is possible to compare the configurations between the IED and the PCM600 online. A report of the differences between the two different IED configurations is provided as a result of the comparison.