When you look at the .csv file, the first four columns are the device's FID number broken up to hex.
The first column proceeding the 0x is the devices first two numbers in its FID. The second column is the third and fourth
numbers in the devices FID, the third column is the fifth and sixth, and the fourth column is the final two digits.
The fifth column is the relay # that the device will appear as inside the GR2400's programming.
The sixth column is what the relay will control if it is a dual pole relay.
There is an example .csv file attached to this.