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<== Date ==> <== Thread ==>
Subject: RE: PV in PCAS can not be archived by Channel Archiver
From: "Jeff Hill" <[email protected]>
To: "'Zhang Yuliang'" <[email protected]>, "'tech-talk'" <[email protected]>
Date: Wed, 9 Nov 2011 09:32:58 -0700

Hi,

 

I agree with Kay that a good way to fault isolate would be to use camonitor to investigate if the PCAS PV is or isn’t sending updates at the same time that the archiver doesn’t appear to be saving updates as expected. Your PCAS service must of course post updates if they will be seen by the archiver. It is also true that your PCAS service may need to provide specifically the PV attributes that are requested by the archiver, and that this could be a difference between a PCAS PV and an IOC’s PV.

 

Jeff
______________________________________________________
Jeffrey O. Hill           Email        [email protected]
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Message content: TSPA

 

 

From: Zhang Yuliang [mailto:[email protected]]
Sent: Wednesday, November 09, 2011 6:14 AM
To: johill; tech-talk
Subject: PV in PCAS can not be archived by Channel Archiver

 

Hi Jeff，

 

I am encountering a confused problem about archiving PV provided by a PCAS.  The value of pv can archive once and only once, and after that although the value of pv has changed, there is only one value in the channel archiver. It seems that the other values are discarded, and I check the stutus of the ca connetion, it is ok.

 

The EPICS base used by the PCAS is 3.14.8.2, I want to know whether the pv of pcas can archived by Channel Archiver. The following are ca-test  [pv] outputs:

 

[zhangyl@timinglinux1 ~]$ ca_test IPV1_REC

name:   IPV1_REC

native type:    DBR_FLOAT

native count:   1

DBR_STRING      99

DBR_SHORT       99

DBR_FLOAT       99.0000

DBR_ENUM        99

DBR_CHAR        99

DBR_LONG        99

DBR_DOUBLE      99.0000

DBR_STS_STRING   3  2   Value: 99

DBR_STS_SHORT    3  2   Value: 99

DBR_STS_FLOAT    3  2   Value: 99.0000

DBR_STS_ENUM     3  2   Value: 99

DBR_STS_CHAR     3  2   Value: 99

DBR_STS_LONG     3  2   Value: 99

DBR_STS_DOUBLE   3  2   Value: 99.0000

DBR_TIME_STRING  3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99

DBR_TIME_SHORT   3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99

DBR_TIME_FLOAT   3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99.0000

DBR_TIME_ENUM    3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99

DBR_TIME_CHAR    3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99

DBR_TIME_LONG    3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99

DBR_TIME_DOUBLE  3  2   TimeStamp: 2011/11/09 17:15:20.990038   Value: 99.0000

DBR_GR_STRING    3  2   Value: 99

DBR_GR_SHORT     3  2

               0        0       90       85       15       10   Value: 99

DBR_GR_FLOAT     3  2    0

           0.000    0.000   90.000   85.000   15.000   10.000   Value: 99.0000

DBR_GR_ENUM     Channel read request failed

DBR_GR_CHAR      3  2

               0        0       90       85       15       10   Value: 99

DBR_GR_LONG      3  2

               0        0       90       85       15       10   Value: 99

DBR_GR_DOUBLE    3  2    0

           0.000    0.000   90.000   85.000   15.000   10.000   Value: 99.0000

DBR_CTRL_STRING  3  2   Value: 99

DBR_CTRL_SHORT   3  2

               0        0       90       85       15       10        0        0 Value: 99

DBR_CTRL_FLOAT   3  2    0

           0.000    0.000   90.000   85.000   15.000   10.000    0.000    0.000 Value: 99.0000

DBR_CTRL_ENUM   Channel read request failed

DBR_CTRL_CHAR    3  2

               0        0       90       85       15       10        0        0 Value:   99

DBR_CTRL_LONG    3  2

               0        0       90       85       15       10        0        0 Value: 99

DBR_CTRL_DOUBLE  3  2    0

           0.000    0.000   90.000   85.000   15.000   10.000    0.000    0.000 Value: 99.000000

DBR_STSACK_STRING       Channel read request failed

DBR_CLASS_NAME  Channel read request failed

 

I noticed that there are Channel read request failed.

 

Thank you!

 

Zhang Yuliang 

 

References:
PV in PCAS can not be archived by Channel Archiver Zhang Yuliang
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