By factory default the 2 cab ids on the cab05 are 5 and 6. However, A Powercab system can only use cab ids 2, 3, 4 and 5. So you will need to change the cab ids as listed below, remembering that the only valid cab ids for a Powercab system are 3,4, and 5 since the Powercab uses cab id 2. So your cab 05 will use 3 and 4 as cab addresses or 4 and 5.
SETTING UP YOUR CAB 05 Just as every locomotive has a separate number (address in DCC terms) each cab needs a separate address so the command station can distinguish one cab from another. Each CAB05 is shipped from the factory with the addresses of 5 and 6. When the address toggle switch is in the left position the cab address is 5. In the right position the factory default address is 6. If already have cabs, macro panels or AIUs using these addresses you will have to change one or both CAB05 addresses before use. To change the cab address: 1) Turn on the DCC system. 2) Unplug your CAB05 from the cab bus. 3) Position the toggle switch to the left or right depending on the address you wish to change 4) Plug the cab back in while holding down the SELECT LOCO button. 5) Release the SELECT LOCO button. The cab will now enter its internal setup program indicated by a flashing LED. 6) Press “1” to enter cab address setup mode. The LED flash rate slows to indicate the cab is ready for you to enter a new cab address. 7) Type in the desired cab address followed by the ENTER key. 8) If you enter cab address 00 the entire cab will reset to its factory settings. If you enter address 01 the entire cab will revert to its original factory settings except for any shifted keys you have already programmed into the cab (the OPTION key will be set to act as DIRECTION). Valid cab addresses are 2 to 63. If you enter a number outside this range the LED will flash rapidly indicating an error. Press SELECT LOCO to clear the error and go back to step 2. This finishes setting the cab address. 9) Repeat the process with the address toggle in the opposite position for the “other” cab address.