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<== Date ==> | <== Thread ==> |
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Subject: | Re: How to find out PVs preventing SSCAN from running? |
From: | "Li, Ji via Tech-talk" <tech-talk at aps.anl.gov> |
To: | Mark Rivers <rivers at cars.uchicago.edu> |
Cc: | "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov> |
Date: | Thu, 5 Aug 2021 15:49:51 +0000 |
Hi Mark,
Here's the screen of the pressure control and PID.
Now I see the output changing (1.401 below the Stop motor button in the screenshot).
After setting XF:28IDD-CTPress_PID.TPRO to 1, the IOC shell started to print trace information as XF:28IDD-CTPress_PID.SCAN was set to "1 second".
------------------------------------
scan-1: dbProcess of 'XF:28IDD-CTPress_PID'
------------------------------------
And
------------------------------------
epics> dbpr XF:28IDD-CTPress_PID 2
ACKS: INVALID ACKT: YES ADEL: 0 ASG :
BKPT: 00 CVAL: 0 CVLP: 0 D : 0
DESC: DISA: 0 DISP: 0 DISS: NO_ALARM
DISV: 1 DP : 0 DRVH: 5 DRVL: -2
DT : 1.000027299 DTP : 1.000027299 DTYP: Soft Channel EGU :
ERR : 0.21021021021021 ERRP: 0.21021021021021
EVNT: FBON: On FBOP: On FLNK: CONSTANT
FMOD: PID HHSV: NO_ALARM HIGH: 0 HIHI: 0
HOPR: 501 HSV : NO_ALARM HYST: 0 I : 0
INP : DB_LINK XF:28IDD-CTPress_Value NPP NMS IP : 0
KD : 0 KI : 0 KP : 20 LCNT: 0
LLSV: NO_ALARM LOLO: 0 LOPR: 0 LOW : 0
LSV : NO_ALARM MDEL: 0 MDT : 0
NAME: XF:28IDD-CTPress_PID NSEV: NO_ALARM NSTA: NO_ALARM
ODEL: 0 OUTL: CA_LINK XF:28IDD-CT{ES-AO}1_11_0 PP NMS
OVAL: 4.2042042042042 P : 4.2042042042042
PACT: 0 PHAS: 0 PINI: NO
PP : 4.2042042042042 PREC: 3 PRIO: LOW
PUTF: 0 RPRO: 0 SCAN: 1 second SDIS: CONSTANT
SEVR: NO_ALARM SMSL: supervisory STAT: NO_ALARM STPL: CONSTANT
TIME: 2021-08-05 11:21:46.531743868 TPRO: 1 TRIG: CONSTANT
TSE : 0 TSEL: CONSTANT TVAL: 0 UDF : 0
UDFS: INVALID VAL : 0.21521521521522
------------------------------------
Best,
From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: Wednesday, August 4, 2021 23:51 To: Li, Ji <liji at bnl.gov> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: Re: How to find out PVs preventing SSCAN from running? the scan ran, $(P)$(R)PID value increased, but $(P)$(OUT) wasn't changed. Seems $(P)$(R)PID was not processed.
The fact that OUT did not change does not necessarily mean that the record did not process. Other possibilities include: - Feedback is turned off - The PID coefficients are such that OUT does not change - The OUT field is being limited by DRVL or DRVH You can set the TPRO field in the epid record to see if it is processing. Mark Sent from my iPhone On Aug 4, 2021, at 10:17 PM, Li, Ji <liji at bnl.gov> wrote: Hi Mark, Michael, The test scan with the following definition of related records turned out that, the scan ran, $(P)$(R)PID value increased, but $(P)$(OUT) wasn't changed. Seems $(P)$(R)PID was not processed. ----------------------------------------------------- grecord(sscan,"$(P)$(R)RampScan") { field(DESC,"Load ramp") field(PINI,"YES") field(PRIO,"HIGH") field(MPTS,"1000") field(NPTS,"1000") field(FPTS,"FREEZE") field(D01PV,"$(P)$(R)Value") field(P1PV,"$(P)$(R)PID.VAL") } grecord(epid,"$(P)$(R)PID") { field(INP,"$(P)$(R)Value") field(OUTL,"$(P)$(OUT) PP NMS") field(KP,"$(KP)") field(KI,"$(KI)") field(KD,"$(KD)") field(LOPR,"0") field(HOPR,"501") field(DRVL,"-100") field(DRVH,"100") field(PREC,"3") } ----------------------------------------------------- Best, Ji Li ________________________________ From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Li, Ji via Tech-talk <tech-talk at aps.anl.gov> Sent: Wednesday, August 4, 2021 20:55 To: Mark Rivers <rivers at cars.uchicago.edu> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: Re: How to find out PVs preventing SSCAN from running? Hi Mark, This is a legacy IOC inherited from X17B beamline at NSLS. I don't know much about the details yet, but from reading the database, XF:28IDD-CTPress_PID is a epid record that writes to a DAC to controls the pressure on the MAXPD endstation at 28ID. I will ask the beamline scientist to run a test with the current configuration. Thank you. Best, Ji Li ________________________________ From: Mark Rivers <rivers at cars.uchicago.edu> Sent: Wednesday, August 4, 2021 20:25 To: Li, Ji <liji at bnl.gov> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: Re: How to find out PVs preventing SSCAN from running? Hi Ji Li, I have used the scan record a lot, and I have never put "PP MS" after a PV name, and it always has processed the record with no problem. For example if the positioner is a D/A converter it writes to the device, if it is a motor .VAL field it moves the motor, etc. without specifying "PP MS". What type of record is XF:28IDD-CTPress_PID? Is it an epid record (which the name suggests), or some other type of record? What does that record do when you write to its VAL field? Mark ________________________________ From: Li, Ji <liji at bnl.gov> Sent: Wednesday, August 4, 2021 6:42 PM To: Mark Rivers Cc: tech-talk at aps.anl.gov Subject: Re: How to find out PVs preventing SSCAN from running? I see. The original definition of P1PV was ---------------------------------------- field(P1PV,"$(P)$(R)PID.VAL PP MS") ---------------------------------------- and it worked in base 3.14. Now we are running base 7.0.5, and changing P1PV to ---------------------------------------- field(P1PV,"$(P)$(R)PID.VAL") ---------------------------------------- brought P1NV to PV OK and enabled the scan. But $(P)$(R)PID doesn't get processed when written. How to define the PV as PP in such fields in base 7.0.5? Best, Ji Li ________________________________ From: Mark Rivers <rivers at cars.uchicago.edu> Sent: Wednesday, August 4, 2021 18:59 To: Li, Ji <liji at bnl.gov> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: Re: How to find out PVs preventing SSCAN from running? P1NV is “PV BAD”. Something looks wrong. Sent from my iPhone On Aug 4, 2021, at 5:50 PM, Li, Ji <liji at bnl.gov> wrote: Hi Mark, How do I access these screens? I did check the level 2 output of dbpr: ---------------------------------------------------------------------- epics> dbpr XF:28IDD-CTPress_RampScan 2 A1CD: 1 A1NV: No PV A1PV: AAWAIT: NO ACKS: NO_ALARM ACKT: YES ACQM: NORMAL ACQT: SCALAR ALRT: 0 ASCD: 1 ASG : ASNV: No PV ASPV: ASWAIT: Wait ATIME: 0 AWAIT: 0 AWCT: 0 BCPT: 0 BKPT: 00 BSCD: 1 BSNV: No PV BSPV: BSWAIT: Wait BUSY: 0 CMND: Clear msg COPYTO: 0 CPT : 0 D01CA: PTR (nil) D01CV: 0 D01DA: PTR 0x147ed20 D01EU: D01HR: 0 D01LR: 0 D01LV: 0 D01NE: 0 D01NV: PV OK D01PR: 1 D01PV: XF:28IDD-CTPress_Value D02CA: PTR (nil) D02CV: 0 D02DA: PTR 0x1480c80 D02EU: D02HR: 0 D02LR: 0 D02LV: 0 D02NE: 0 D02NV: No PV D02PR: 0 D02PV: D03CA: PTR (nil) D03CV: 0 D03DA: PTR 0x1482be0 D03EU: D03HR: 0 D03LR: 0 D03LV: 0 D03NE: 0 D03NV: No PV D03PR: 0 D03PV: D04CA: PTR (nil) D04CV: 0 D04DA: PTR 0x1484b40 D04EU: D04HR: 0 D04LR: 0 D04LV: 0 D04NE: 0 D04NV: No PV D04PR: 0 D04PV: D05CA: PTR (nil) D05CV: 0 D05DA: PTR 0x147cdc0 D05EU: D05HR: 0 D05LR: 0 D05LV: 0 D05NE: 0 D05NV: No PV D05PR: 0 D05PV: D06CA: PTR (nil) D06CV: 0 D06DA: PTR 0x147cdc0 D06EU: D06HR: 0 D06LR: 0 D06LV: 0 D06NE: 0 D06NV: No PV D06PR: 0 D06PV: D07CA: PTR (nil) D07CV: 0 D07DA: PTR 0x147cdc0 D07EU: D07HR: 0 D07LR: 0 D07LV: 0 D07NE: 0 D07NV: No PV D07PR: 0 D07PV: D08CA: PTR (nil) D08CV: 0 D08DA: PTR 0x147cdc0 D08EU: D08HR: 0 D08LR: 0 D08LV: 0 D08NE: 0 D08NV: No PV D08PR: 0 D08PV: D09CA: PTR (nil) D09CV: 0 D09DA: PTR 0x147cdc0 D09EU: D09HR: 0 D09LR: 0 D09LV: 0 D09NE: 0 D09NV: No PV D09PR: 0 D09PV: D10CA: PTR (nil) D10CV: 0 D10DA: PTR 0x147cdc0 D10EU: D10HR: 0 D10LR: 0 D10LV: 0 D10NE: 0 D10NV: No PV D10PR: 0 D10PV: D11CA: PTR (nil) D11CV: 0 D11DA: PTR 0x147cdc0 D11EU: D11HR: 0 D11LR: 0 D11LV: 0 D11NE: 0 D11NV: No PV D11PR: 0 D11PV: D12CA: PTR (nil) D12CV: 0 D12DA: PTR 0x147cdc0 D12EU: D12HR: 0 D12LR: 0 D12LV: 0 D12NE: 0 D12NV: No PV D12PR: 0 D12PV: D13CA: PTR (nil) D13CV: 0 D13DA: PTR 0x147cdc0 D13EU: D13HR: 0 D13LR: 0 D13LV: 0 D13NE: 0 D13NV: No PV D13PR: 0 D13PV: D14CA: PTR (nil) D14CV: 0 D14DA: PTR 0x147cdc0 D14EU: D14HR: 0 D14LR: 0 D14LV: 0 D14NE: 0 D14NV: No PV D14PR: 0 D14PV: D15CA: PTR (nil) D15CV: 0 D15DA: PTR 0x147cdc0 D15EU: D15HR: 0 D15LR: 0 D15LV: 0 D15NE: 0 D15NV: No PV D15PR: 0 D15PV: D16CA: PTR (nil) D16CV: 0 D16DA: PTR 0x147cdc0 D16EU: D16HR: 0 D16LR: 0 D16LV: 0 D16NE: 0 D16NV: No PV D16PR: 0 D16PV: D17CA: PTR (nil) D17CV: 0 D17DA: PTR 0x147cdc0 D17EU: D17HR: 0 D17LR: 0 D17LV: 0 D17NE: 0 D17NV: No PV D17PR: 0 D17PV: D18CA: PTR (nil) D18CV: 0 D18DA: PTR 0x147cdc0 D18EU: D18HR: 0 D18LR: 0 D18LV: 0 D18NE: 0 D18NV: No PV D18PR: 0 D18PV: D19CA: PTR (nil) D19CV: 0 D19DA: PTR 0x147cdc0 D19EU: D19HR: 0 D19LR: 0 D19LV: 0 D19NE: 0 D19NV: No PV D19PR: 0 D19PV: D20CA: PTR (nil) D20CV: 0 D20DA: PTR 0x147cdc0 D20EU: D20HR: 0 D20LR: 0 D20LV: 0 D20NE: 0 D20NV: No PV D20PR: 0 D20PV: D21CA: PTR (nil) D21CV: 0 D21DA: PTR 0x147cdc0 D21EU: D21HR: 0 D21LR: 0 D21LV: 0 D21NE: 0 D21NV: No PV D21PR: 0 D21PV: D22CA: PTR (nil) D22CV: 0 D22DA: PTR 0x147cdc0 D22EU: D22HR: 0 D22LR: 0 D22LV: 0 D22NE: 0 D22NV: No PV D22PR: 0 D22PV: D23CA: PTR (nil) D23CV: 0 D23DA: PTR 0x147cdc0 D23EU: D23HR: 0 D23LR: 0 D23LV: 0 D23NE: 0 D23NV: No PV D23PR: 0 D23PV: D24CA: PTR (nil) D24CV: 0 D24DA: PTR 0x147cdc0 D24EU: D24HR: 0 D24LR: 0 D24LV: 0 D24NE: 0 D24NV: No PV D24PR: 0 D24PV: D25CA: PTR (nil) D25CV: 0 D25DA: PTR 0x147cdc0 D25EU: D25HR: 0 D25LR: 0 D25LV: 0 D25NE: 0 D25NV: No PV D25PR: 0 D25PV: D26CA: PTR (nil) D26CV: 0 D26DA: PTR 0x147cdc0 D26EU: D26HR: 0 D26LR: 0 D26LV: 0 D26NE: 0 D26NV: No PV D26PR: 0 D26PV: D27CA: PTR (nil) D27CV: 0 D27DA: PTR 0x147cdc0 D27EU: D27HR: 0 D27LR: 0 D27LV: 0 D27NE: 0 D27NV: No PV D27PR: 0 D27PV: D28CA: PTR (nil) D28CV: 0 D28DA: PTR 0x147cdc0 D28EU: D28HR: 0 D28LR: 0 D28LV: 0 D28NE: 0 D28NV: No PV D28PR: 0 D28PV: D29CA: PTR (nil) D29CV: 0 D29DA: PTR 0x147cdc0 D29EU: D29HR: 0 D29LR: 0 D29LV: 0 D29NE: 0 D29NV: No PV D29PR: 0 D29PV: D30CA: PTR (nil) D30CV: 0 D30DA: PTR 0x147cdc0 D30EU: D30HR: 0 D30LR: 0 D30LV: 0 D30NE: 0 D30NV: No PV D30PR: 0 D30PV: D31CA: PTR (nil) D31CV: 0 D31DA: PTR 0x147cdc0 D31EU: D31HR: 0 D31LR: 0 D31LV: 0 D31NE: 0 D31NV: No PV D31PR: 0 D31PV: D32CA: PTR (nil) D32CV: 0 D32DA: PTR 0x147cdc0 D32EU: D32HR: 0 D32LR: 0 D32LV: 0 D32NE: 0 D32NV: No PV D32PR: 0 D32PV: D33CA: PTR (nil) D33CV: 0 D33DA: PTR 0x147cdc0 D33EU: D33HR: 0 D33LR: 0 D33LV: 0 D33NE: 0 D33NV: No PV D33PR: 0 D33PV: D34CA: PTR (nil) D34CV: 0 D34DA: PTR 0x147cdc0 D34EU: D34HR: 0 D34LR: 0 D34LV: 0 D34NE: 0 D34NV: No PV D34PR: 0 D34PV: D35CA: PTR (nil) D35CV: 0 D35DA: PTR 0x147cdc0 D35EU: D35HR: 0 D35LR: 0 D35LV: 0 D35NE: 0 D35NV: No PV D35PR: 0 D35PV: D36CA: PTR (nil) D36CV: 0 D36DA: PTR 0x147cdc0 D36EU: D36HR: 0 D36LR: 0 D36LV: 0 D36NE: 0 D36NV: No PV D36PR: 0 D36PV: D37CA: PTR (nil) D37CV: 0 D37DA: PTR 0x147cdc0 D37EU: D37HR: 0 D37LR: 0 D37LV: 0 D37NE: 0 D37NV: No PV D37PR: 0 D37PV: D38CA: PTR (nil) D38CV: 0 D38DA: PTR 0x147cdc0 D38EU: D38HR: 0 D38LR: 0 D38LV: 0 D38NE: 0 D38NV: No PV D38PR: 0 D38PV: D39CA: PTR (nil) D39CV: 0 D39DA: PTR 0x147cdc0 D39EU: D39HR: 0 D39LR: 0 D39LV: 0 D39NE: 0 D39NV: No PV D39PR: 0 D39PV: D40CA: PTR (nil) D40CV: 0 D40DA: PTR 0x147cdc0 D40EU: D40HR: 0 D40LR: 0 D40LV: 0 D40NE: 0 D40NV: No PV D40PR: 0 D40PV: D41CA: PTR (nil) D41CV: 0 D41DA: PTR 0x147cdc0 D41EU: D41HR: 0 D41LR: 0 D41LV: 0 D41NE: 0 D41NV: No PV D41PR: 0 D41PV: D42CA: PTR (nil) D42CV: 0 D42DA: PTR 0x147cdc0 D42EU: D42HR: 0 D42LR: 0 D42LV: 0 D42NE: 0 D42NV: No PV D42PR: 0 D42PV: D43CA: PTR (nil) D43CV: 0 D43DA: PTR 0x147cdc0 D43EU: D43HR: 0 D43LR: 0 D43LV: 0 D43NE: 0 D43NV: No PV D43PR: 0 D43PV: D44CA: PTR (nil) D44CV: 0 D44DA: PTR 0x147cdc0 D44EU: D44HR: 0 D44LR: 0 D44LV: 0 D44NE: 0 D44NV: No PV D44PR: 0 D44PV: D45CA: PTR (nil) D45CV: 0 D45DA: PTR 0x147cdc0 D45EU: D45HR: 0 D45LR: 0 D45LV: 0 D45NE: 0 D45NV: No PV D45PR: 0 D45PV: D46CA: PTR (nil) D46CV: 0 D46DA: PTR 0x147cdc0 D46EU: D46HR: 0 D46LR: 0 D46LV: 0 D46NE: 0 D46NV: No PV D46PR: 0 D46PV: D47CA: PTR (nil) D47CV: 0 D47DA: PTR 0x147cdc0 D47EU: D47HR: 0 D47LR: 0 D47LV: 0 D47NE: 0 D47NV: No PV D47PR: 0 D47PV: D48CA: PTR (nil) D48CV: 0 D48DA: PTR 0x147cdc0 D48EU: D48HR: 0 D48LR: 0 D48LV: 0 D48NE: 0 D48NV: No PV D48PR: 0 D48PV: D49CA: PTR (nil) D49CV: 0 D49DA: PTR 0x147cdc0 D49EU: D49HR: 0 D49LR: 0 D49LV: 0 D49NE: 0 D49NV: No PV D49PR: 0 D49PV: D50CA: PTR (nil) D50CV: 0 D50DA: PTR 0x147cdc0 D50EU: D50HR: 0 D50LR: 0 D50LV: 0 D50NE: 0 D50NV: No PV D50PR: 0 D50PV: D51CA: PTR (nil) D51CV: 0 D51DA: PTR 0x147cdc0 D51EU: D51HR: 0 D51LR: 0 D51LV: 0 D51NE: 0 D51NV: No PV D51PR: 0 D51PV: D52CA: PTR (nil) D52CV: 0 D52DA: PTR 0x147cdc0 D52EU: D52HR: 0 D52LR: 0 D52LV: 0 D52NE: 0 D52NV: No PV D52PR: 0 D52PV: D53CA: PTR (nil) D53CV: 0 D53DA: PTR 0x147cdc0 D53EU: D53HR: 0 D53LR: 0 D53LV: 0 D53NE: 0 D53NV: No PV D53PR: 0 D53PV: D54CA: PTR (nil) D54CV: 0 D54DA: PTR 0x147cdc0 D54EU: D54HR: 0 D54LR: 0 D54LV: 0 D54NE: 0 D54NV: No PV D54PR: 0 D54PV: D55CA: PTR (nil) D55CV: 0 D55DA: PTR 0x147cdc0 D55EU: D55HR: 0 D55LR: 0 D55LV: 0 D55NE: 0 D55NV: No PV D55PR: 0 D55PV: D56CA: PTR (nil) D56CV: 0 D56DA: PTR 0x147cdc0 D56EU: D56HR: 0 D56LR: 0 D56LV: 0 D56NE: 0 D56NV: No PV D56PR: 0 D56PV: D57CA: PTR (nil) D57CV: 0 D57DA: PTR 0x147cdc0 D57EU: D57HR: 0 D57LR: 0 D57LV: 0 D57NE: 0 D57NV: No PV D57PR: 0 D57PV: D58CA: PTR (nil) D58CV: 0 D58DA: PTR 0x147cdc0 D58EU: D58HR: 0 D58LR: 0 D58LV: 0 D58NE: 0 D58NV: No PV D58PR: 0 D58PV: D59CA: PTR (nil) D59CV: 0 D59DA: PTR 0x147cdc0 D59EU: D59HR: 0 D59LR: 0 D59LV: 0 D59NE: 0 D59NV: No PV D59PR: 0 D59PV: D60CA: PTR (nil) D60CV: 0 D60DA: PTR 0x147cdc0 D60EU: D60HR: 0 D60LR: 0 D60LV: 0 D60NE: 0 D60NV: No PV D60PR: 0 D60PV: D61CA: PTR (nil) D61CV: 0 D61DA: PTR 0x147cdc0 D61EU: D61HR: 0 D61LR: 0 D61LV: 0 D61NE: 0 D61NV: No PV D61PR: 0 D61PV: D62CA: PTR (nil) D62CV: 0 D62DA: PTR 0x147cdc0 D62EU: D62HR: 0 D62LR: 0 D62LV: 0 D62NE: 0 D62NV: No PV D62PR: 0 D62PV: D63CA: PTR (nil) D63CV: 0 D63DA: PTR 0x147cdc0 D63EU: D63HR: 0 D63LR: 0 D63LV: 0 D63NE: 0 D63NV: No PV D63PR: 0 D63PV: D64CA: PTR (nil) D64CV: 0 D64DA: PTR 0x147cdc0 D64EU: D64HR: 0 D64LR: 0 D64LV: 0 D64NE: 0 D64NV: No PV D64PR: 0 D64PV: D65CA: PTR (nil) D65CV: 0 D65DA: PTR 0x147cdc0 D65EU: D65HR: 0 D65LR: 0 D65LV: 0 D65NE: 0 D65NV: No PV D65PR: 0 D65PV: D66CA: PTR (nil) D66CV: 0 D66DA: PTR 0x147cdc0 D66EU: D66HR: 0 D66LR: 0 D66LV: 0 D66NE: 0 D66NV: No PV D66PR: 0 D66PV: D67CA: PTR (nil) D67CV: 0 D67DA: PTR 0x147cdc0 D67EU: D67HR: 0 D67LR: 0 D67LV: 0 D67NE: 0 D67NV: No PV D67PR: 0 D67PV: D68CA: PTR (nil) D68CV: 0 D68DA: PTR 0x147cdc0 D68EU: D68HR: 0 D68LR: 0 D68LV: 0 D68NE: 0 D68NV: No PV D68PR: 0 D68PV: D69CA: PTR (nil) D69CV: 0 D69DA: PTR 0x147cdc0 D69EU: D69HR: 0 D69LR: 0 D69LV: 0 D69NE: 0 D69NV: No PV D69PR: 0 D69PV: D70CA: PTR (nil) D70CV: 0 D70DA: PTR 0x147cdc0 D70EU: D70HR: 0 D70LR: 0 D70LV: 0 D70NE: 0 D70NV: No PV D70PR: 0 D70PV: DATA: 1 DDLY: 0 DESC: Load ramp DISA: 0 DISP: 0 DISS: NO_ALARM DISV: 1 DPT : 0 DSTATE: POSTED DTYP: <nil> EVNT: EXSC: 0 FAZE: IDLE FFO : USE F-FLAGS FLNK: CONSTANT FPTS: FREEZE KILL: 0 LCNT: 0 LPAU: GO MPTS: 1000 NAME: XF:28IDD-CTPress_RampScan NPTS: 1000 NSEV: NO_ALARM NSTA: NO_ALARM P1AR: ABSOLUTE P1CA: PTR (nil) P1CP: 0 P1CV: 0 P1DV: 0 P1EP: 0 P1EU: P1FC: NO P1FE: NO P1FI: NO P1FS: NO P1FW: NO P1HR: 0 P1LR: 0 P1LV: 0 P1NV: PV BAD P1PA: PTR 0x1465600 P1PP: 0 P1PR: 0 P1PV: XF:28IDD-CTPress_PID.VAL PP MS P1RA: PTR 0x146d340 P1SI: 0 P1SM: LINEAR P1SP: 0 P1WD: 0 P2AR: ABSOLUTE P2CA: PTR (nil) P2CP: 0 P2CV: 0 P2DV: 0 P2EP: 0 P2EU: P2FC: NO P2FE: NO P2FI: NO P2FS: NO P2FW: NO P2HR: 0 P2LR: 0 P2LV: 0 P2NV: No PV P2PA: PTR 0x1467550 P2PP: 0 P2PR: 0 P2PV: P2RA: PTR 0x14711e0 P2SI: 0 P2SM: LINEAR P2SP: 0 P2WD: 0 P3AR: ABSOLUTE P3CA: PTR (nil) P3CP: 0 P3CV: 0 P3DV: 0 P3EP: 0 P3EU: P3FC: NO P3FE: NO P3FI: NO P3FS: NO P3FW: NO P3HR: 0 P3LR: 0 P3LV: 0 P3NV: No PV P3PA: PTR 0x14694a0 P3PP: 0 P3PR: 0 P3PV: P3RA: PTR 0x1475080 P3SI: 0 P3SM: LINEAR P3SP: 0 P3WD: 0 P4AR: ABSOLUTE P4CA: PTR (nil) P4CP: 0 P4CV: 0 P4DV: 0 P4EP: 0 P4EU: P4FC: NO P4FE: NO P4FI: NO P4FS: NO P4FW: NO P4HR: 0 P4LR: 0 P4LV: 0 P4NV: No PV P4PA: PTR 0x146b3f0 P4PP: 0 P4PR: 0 P4PV: P4RA: PTR 0x1478f20 P4SI: 0 P4SM: LINEAR P4SP: 0 P4WD: 0 PACT: 0 PASM: STAY PAUS: GO PCPT: 0 PDLY: 0.04 PHAS: 0 PINI: YES PRIO: HIGH PUTF: 0 PXSC: 0 R1CV: 0 R1DL: 0 R1LV: 0 R1NV: No PV R1PV: R2CV: 0 R2DL: 0 R2LV: 0 R2NV: No PV R2PV: R3CV: 0 R3DL: 0 R3LV: 0 R3NV: No PV R3PV: R4CV: 0 R4DL: 0 R4LV: 0 R4NV: No PV R4PV: RDLY: 0 REFD: 1 RPRO: 0 SCAN: Passive SDIS: CONSTANT SEVR: NO_ALARM SMSG: Killing scan (kill=1/3) STAT: NO_ALARM T1CD: 1 T1NV: No PV T1PV: T2CD: 1 T2NV: No PV T2PV: T3CD: 1 T3NV: No PV T3PV: T4CD: 1 T4NV: No PV T4PV: TIME: <undefined> TLAP: 00 00 00 00 00 00 00 00 TOLP: 8e 6e 6c 3b 12 c6 39 20 TPRO: 0 TSE : 0 TSEL: CONSTANT UDF : 0 UDFS: INVALID VAL : 0 VERS: 5.53 WAIT: 0 WCNT: 0 WTNG: 0 XSC : 0 ---------------------------------------------------------------------- Best, Ji Li ________________________________ From: Mark Rivers <rivers at cars.uchicago.edu> Sent: Wednesday, August 4, 2021 18:31 To: Li, Ji <liji at bnl.gov> Cc: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov> Subject: Re: How to find out PVs preventing SSCAN from running? Did you look at the screens for all 4 positioners and all 70 detectors to see if there is a disconnected PV? Send the output of dbpr scanrec 2 Mark Sent from my iPhone On Aug 4, 2021, at 5:04 PM, Li, Ji via Tech-talk <tech-talk at aps.anl.gov> wrote: Hi, We have an IOC doing ramps (1-D scan) using sscan record. It had been working properly in Debian 7 until recently we switched to RHEL8. When setting the EXSC field of the sscan record to 1, the scan didn't start as expected. The IOC reported: ---------------------------------------------- Starting new scan with unexpected faze ('SCAN_PENDING'). ---------------------------------------------- The SMSG field or the sscan record read: ---------------------------------------------- Waiting for PV's to connect ---------------------------------------------- And the CPT field remained 0. The sscan record has D01PV and P1PV associated with PVs also created in this IOC, both shown as connected, readable and writable from cainfo. Is it possible to find out what PVs, or actually something else causing this problem? Thanks for any comments. Ji Li |