We use a lot of dimmer doubling in our venue. The patch display shows some of the doubled dimmers as 3B or 115B but shows others as there raw DMX (+256) value. All dimmers are working properly, though this display can cause confusion when one verifies tha patch.
I have unpatched and deleted channels then repatched the 256+ dimmers and they will not display as xB.
Channel Check behaivior with the iRFR is also odd: If I start at address 99, when I get to 101A it displays as 101. 101B dispalys normally, then the next address is 256. This happens every time.