Updated 06-Jun-2012 kag In order to clarify the differences in the versions of the transition and paddle boards, I've put together the following list, which should help solve compatibility questions/problems. Paddle Boards: - BC-003 Rev.0: Note: Rev.0 and Rev.1 are functionally equivalent to the Rev.2 board, but were modified for missing traces. Rev.2 and Rev.3 differ fundamentally, regarding encoders. Rev.2 passes the encoder signals straight-through, ch1 - ch8. Rev.3 passes ch1 - ch4 encoder signals to ch5 - ch8, which is what the VME58-4E expects. - BC-003 Rev.1: This board will work with the VME58-8. It should work with the MAXv, but I haven't tested it yet. - BC-003 Rev.2: Works with the VME58-8, VME58-8S, & MAXv(*) - BC-003 Rev.3: This board was designed to work with the VME58-8 AND the VME58-4E. - BC-093 Rev.0: The latest paddle board, designed to work with the MAXv. This board can be fitted with either the std 3-row VME connector, or a 5-row VME64 connector. - 96PC059 ctls: This board was designed by the AES Controls group. It will work only with the VME8 board. (*)Note: The MAXv will work with Rev.3, which is by far the most common paddle board in use at APS. It will control all 8 channels of steppers, but only channels 1-4 of the encoders will work. If encoder channels 5-8 are to be used, the Rev.2 paddle board will be needed. Transition Boards: - BC-005 Rev.0: Will work with any of the above paddle boards and their associated controller board. - BC-005 Rev.1: Also compatible with all of the paddle boards. The main Difference between versions is the addition of the E- Stop input on rev.1. - BC-005 Rev.2: New layout, same circuit/functionality. - BC-005 Rev.3: Simplified layout, less parts, same functionality. Replaced toggle switch with jumpers. - BC-037 Rev.0: New transition board, simplified circuit, less expensive, but no encoder support. Works with BC-003, BC-093, and 96PC059