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<== Date ==> | <== Thread ==> |
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Subject: | Hardcoded scale factor on pmac |
From: | George Nicolas Kontogiorgos via Tech-talk <[email protected]> |
To: | "[email protected]" <[email protected]> |
Cc: | "[email protected]" <[email protected]> |
Date: | Tue, 30 Jul 2019 12:51:10 +0000 |
Dear Giles, Hope this e-mail finds you well. I am working on a custom tripod system with its own kinematics. The hardware I am using is Power PMAC, as before with slits (Those e-mails about DMOV bug).
I had a problem in this project with scale factors. I am giving you my configuration to illustrate the problem:
With this values I got 2147483648 with caget on my configured virtual motor. When I set MRES = 50e-6 mm/step (My encoder resolution) I got the correct value with caget instead of a factor 1e+4. So I started to search
where is this factor and I found scale_=10000; on pmacCSAxis.cpp, line 24. Just for test, I changed this value to 1 and my caget get the correct answer.
Am I setting something wrong or there is a bug on this hardcoded scale_? Why there is a hardcoded scale factor? Note that 2147483648 is the saturated negative value for 2 complement with 32 bits because my Q89*1e4 is
too big. Best regards George Nicolas Kontogiorgos Electrical Engineer Beamline Software Group (SOL) Brazilian Synchrotron Light Laboratory (LNLS) Aviso Legal: Esta mensagem e seus anexos podem conter informações confidenciais e/ou de uso restrito. Observe atentamente seu conteúdo e considere eventual consulta ao remetente antes de copiá-la, divulgá-la ou distribuí-la. Se você recebeu esta mensagem por engano, por favor avise o remetente e apague-a imediatamente. Disclaimer: This email and its attachments may contain confidential and/or privileged information. Observe its content carefully and consider possible querying to the sender before copying, disclosing or distributing it. If you have received this email by mistake, please notify the sender and delete it immediately. |