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Bug #25396

P:L30Z ADC change

Added by Richard Neswold about 2 months ago.

Status:
New
Priority:
Normal
Assignee:
Richard Neswold
Category:
PXMC1 Front-end
Start date:
01/13/2021
Due date:
% Done:

0%

Estimated time:
Duration:

Description

Bruce Hanna reported a few weeks ago that P:L30Z wasn't reporting its position (via LDVT readings) properly. After some investigation, it looked like it should have been using channel 5 instead of 4 (despite the motor being # 4). I changed the database and everything seemed to be working properly.

A week later, he mentioned it wasn't working. I needed to change the database to specify ADC channel 4 again! Today, I had to move it back to 5.

In each case, the front-end was rebooted. There's some software bug that, each time the front-end is booted, it doesn't associate the problem ADC channel with the motor. We don't know if other motors are seeing the same problem (an off-by-one error.)

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