The E-Z Command Plus still can only be programmed with short addresses. Do keep in mind that a locomotive's address you set on the E-Z Command will also carry over to other DCC systems such as Digitrax. So a locomotive programmed on address 1 carries over to Digitrax as address 001. This way you will not need to reprogram when switching between the two systems. But the short answer is no, E-Z Command does not support long addresses, and a locomotive programmed with a long address will need to be reprogrammed to control it with the E-Z Command.