Why won’t DF work with just one drive

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lowrybt1
Posts: 98
Joined: Sun Mar 08, 2015 3:42 pm

Why won’t DF work with just one drive

Post by lowrybt1 » Sun Jun 17, 2018 11:17 pm

I have a C8DF with 2 8” Siemens drives connected using a daisy-chain radial configuration: single ribbon cable with A and B connectors. One drive is buggy. I’d like to use the working drive as a single drive with the system. One the solo drive, I’ve set the drive logic board jumper and terminating resistor correctly and attached the A connector to the drive. I leave the B connector open (not connected). For some reason, the system does not seem to be communicating with the solo drive. Do I need to somehow terminate the B connector on the cable? This is in the category of no big deal but I’m surprised that connecting the DF cable to just an A drive results in failure.

Any thoughts?
C4PDF w. 24K, 2 x 5.25 MPI B-51 drives
C1P RevB with fully-populated 610 board and A-13. Klyball D-13.
Spares: 600 Rev.D, 610 board, 540A, A-13 with homebuilt data separator, MPI B-51 logic board (w/o data sep module) and mechanicals

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