Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	Re: second relative motion stuck in a do loop
From:	"Tran, Phi Dung via Tech-talk" <tech-talk at aps.anl.gov>
To:	Kevin Peterson <kmpeters at anl.gov>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Thu, 9 Nov 2023 18:58:55 +0000

Hi Kevin,

Here is the result.

If I caput my virtual motor $(P) by 1 then $(P)-F will fanout to my three real motors. The three motors move by 1 and their X.Mtr.VAL is at 1. If I repeat caput by 1 many times to my virtual motor, the three real motor VAL remains at 1.

However when I caput 2 to my virtual motor, the three motors moved to 20.1 mm.

Here is the output,

[ptran1@xf19id2-ws3 ~]$ caput XF:19IDC-ES-G0{Ymove}Mtr.TPRO 1

Old : XF:19IDC-ES-G0{Ymove}Mtr.TPRO 0

New : XF:19IDC-ES-G0{Ymove}Mtr.TPRO 1

[ptran1@xf19id2-ws3 ~]$ caput XF:19IDC-ES-G0{Ymove}Mtr-F.TPRO 1

Old : XF:19IDC-ES-G0{Ymove}Mtr-F.TPRO 0

New : XF:19IDC-ES-G0{Ymove}Mtr-F.TPRO 1

Input 1, caput XF:19IDC-ES-G0{Ymove}Mtr 1, all three real motors moved to 1

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-F'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

…. Multiple repeat of CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

….

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

Input2, caput XF:19IDC-ES-G0{Ymove}Mtr 1, all 3 real motors previously at 1, they remained at 1 and all

Subsequent input of 1 will not move the 3 real motors and only dbProcess is shown.

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

Input3, caput XF:19IDC-ES-G0{Ymove}Mtr 1, all 3 real motors previously at 1, they remained at 1 and all

Subsequent input of 1 will not move the 3 real motors and only dbProcess is shown.

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

Input4, caput XF:19IDC-ES-G0{Ymove}Mtr 2, all 3 real motors previously at 1, they moved to 20.1

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

ca:ptran1 at xf19id2-ws3.nsls2.bnl.local: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-F'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

….

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

scanOnce: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr-DMOV'

CAC-event: dbProcess of 'XF:19IDC-ES-G0{Ymove}Mtr'

Thanks,

Phi

From: Kevin Peterson <kmpeters at anl.gov>
Sent: Thursday, November 9, 2023 11:04 AM
To: Tran, Phi Dung <ptran1 at bnl.gov>; tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: Re: second relative motion stuck in a do loop

Phi,

Are any of the motors (real or soft) doing retries?

How does the $(P)-DMOV record's behavior differ between the 1st relative
move, which succeeds, and the 2nd relative move, which misbehaves?

Kevin

On 11/7/23 22:23, Tran, Phi Dung via Tech-talk wrote:
> Hi,
>
> I am using RLV for relative motion with a soft channel. When I issue a
> caput command with a value of 2 to my soft channel, $(P), to move the
> other real motors, they move by 2 mm. However, when I repeat the caput
> command with the value 2 to my soft channel for the second time, the
> motors move by 7*2=14 mm instead of 2 mm. Please advise.
>
> Thank you,
> Phi
>

Replies:: Re: second relative motion stuck in a do loop Kevin Peterson via Tech-talk

References:: second relative motion stuck in a do loop Tran, Phi Dung via Tech-talk; Re: second relative motion stuck in a do loop Kevin Peterson via Tech-talk

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ANJ, 09 Nov 2023

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System