[INSTRM-27] Explicitly specify motor direction in the focus motor initialization. Created: 23/Nov/16 Updated: 07/Dec/16 Resolved: 07/Dec/16 |
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| Status: | Done |
| Project: | Instrument control development |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Major |
| Reporter: | cloomis | Assignee: | cloomis |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Description |
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LAM reported that their motor motion was probably in the wrong direction. To confirm, I drove all three motors towards home, and they all tripped/hit the far (wrong) limit. The bench system at IDG showed axis A going in the wrong direction; the other two were OK. Turned out that the initialization string sent to the motors did not define the motor direction (the correct F0 vs. F1), and that axis A showed the same behavior as the motors at LAM. After setting F0, the motor behaved correctly. We suspect that is the only motor configuration problem at LAM, but of course cannot be sure that there is not miswiring. |
| Comments |
| Comment by cloomis [ 07/Dec/16 ] |
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It turns out that were two problems, one firmware and one hardware. All three motors delivered to LAM were wired incorrectly. The error was where the wires coming out of the motor were plugged in to the The firmware problem is that the motor direction cannot be set for axes 2-4, which is why we were not able to paper over the problem on axes B&C. If the wiring is correct, the firmware bug is irrelevant. I'm closing this. |