Re: second relative motion stuck in a do loop

["Tran, Phi Dung via Tech-talk" <tech-talk@aps.anl.gov>]

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

ca:ptran1@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' 

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

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

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

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

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

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From: Kevin Peterson <kmpeters@anl.gov>
Sent: Thursday, November 9, 2023 11:04 AM
To: Tran, Phi Dung <ptran1@bnl.gov>; tech-talk@aps.anl.gov <tech-talk@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
>