PIP Function Block- Should AI_Offset and Auto_on be PVs with read and write access or only read acess?

[slacAdpai]

IN the PIP Function block, currently AI_Offset and Auto_On PVs are read access only. Should the User be able to change the values accordingly? Especially being able to toggle auto on?

[slacAdpai]

I believe that the analog offset set to 13 is working well. I will finalize the results tomorrow when I ask someone to change the offsets on the QPC to 13.

[n-wbrown]

@slacAdpai @ghalym. Are we standardizing 13 as the new offset or are we keeping 11? If so I'll update QPC controller setup guide to match (https://docs.google.com/document/d/1Hc8TfKOTtBE7kt8lk-NOo_f31xrU7EGBmc2bz3cXqt8/edit#).

[slacAdpai]

@n-wbrown @ghalym @jyin999 @jyotiphy Using the new library, 13 has been working very well. It gives us more precise pressures in the 1e-11 and lower range. It is also easier to tell if the ion pump controller is acting up. If everyone is ok, I would recommend standardizing to 13.

[jyin999]

I didn’t compare to other offset. I use 13. It gives about 15% difference between PLC and QPC controller at e-10 Torr level. From: Allen Pai <[email protected]> Sent: Monday, June 22, 2020 10:08 AM To: pcdshub/lcls-twincat-vacuum <[email protected]> Cc: Yin, Jing <[email protected]>; Mention <[email protected]> Subject: Re: [pcdshub/lcls-twincat-vacuum] PIP Function Block- Should AI_Offset and Auto_on be PVs with read and write access or only read acess? (#42) @n-wbrown<https://github.com/n-wbrown> @ghalym<https://github.com/ghalym> @jyin999<https://github.com/jyin999> @jyotiphy<https://github.com/jyotiphy> Using the new library, 13 has been working very well. It gives us more precise pressures in the 1e-11 and lower range. It is also easier to tell if the ion pump controller is acting up. If everyone is ok, I would recommend standardizing to 13. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#42 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANEPBHYQTMAHPII627C5ZTDRX6FVVANCNFSM4OCLMTZQ>.

[ghalym]

I have changed the pramgas to be of type io instead of just i.