Experimental Physics and
Industrial Control System

print(type(pvs[0])) would do it in a normal python script, though I'm not perfectly certain how CSS BOY handles output to stdout.

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From: Gregory, Ray <[email protected]>
Sent: Monday, May 7, 2018 3:32:36 PM
To: Lang, Keenan C.; Engbretson, Mark S.; [email protected]
Subject: RE: error calling PVUtil.getString()

 

I am creating the PVs list in the OPI editor in the ‘Attach Scripts’ dialog. For pvs[0] I have defined it to be ‘$(S):INTYPE$(IN_CHN)_S’ in the ‘Input PVs’ tab of the ‘Attach Scripts’ dialog, where S and IN_CHN are macros.

 

Can you please tell me how to print pvs[0]'s type in the code?

 

Thank you for your help,

 

--Ray

 

From: Lang, Keenan C. <[email protected]>
Sent: Monday, May 07, 2018 4:27 PM
To: Gregory, Ray <[email protected]>; Engbretson, Mark S. <[email protected]>; [email protected]
Subject: Re: error calling PVUtil.getString()

 

Your error indicates that pvs[0] is a different type of value than the function expects to find.

 

How are you creating the pvs list? And/or could you print what pvs[0]'s type is right before the command on line 24?

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From: [email protected] <[email protected]> on behalf of Gregory, Ray <[email protected]>
Sent: Monday, May 7, 2018 2:22:38 PM
To: Engbretson, Mark S.; [email protected]
Subject: RE: error calling PVUtil.getString()

 

caget gives:

 

$ caget BL104:SE:LS:INTYPE0_SS

BL104:SE:LS:INTYPE0_SS         Platinum RTD

 

 

The PV is a mbbo record.

 

--Ray

 

Ray Gregory

 

Data Acquisition and Controls

HFIR Instrument Operations

Instrument and Source Division

Neutron Sciences Directorate

Oak Ridge National Laboratory

Building 7964K Room 19

 

ph     (865) 241-1116

cell    (417) 827-6515

email:  [email protected]

 

Oak Ridge National Laboratory

1 Bethel Valley Road, MS-6430

Oak Ridge, TN               37830

 

From: Mark Engbretson <[email protected]>
Sent: Monday, May 07, 2018 3:11 PM
To: Gregory, Ray <[email protected]>; [email protected]
Subject: RE: error calling PVUtil.getString()

 

What is the value of pvs[0] ?

 

From: [email protected] <[email protected]> On Behalf Of Gregory, Ray
Sent: Monday, May 7, 2018 2:02 PM
To: [email protected]
Subject: error calling PVUtil.getString()

 

In a CSS BOY OPI I am calling PVUtil.getString() from a script attached to my OPI. I am passing it one of the script’s PV values:

 

Line

…

22           from org.csstudio.opibuilder.scriptUtil import PVUtil, ScriptUtil

23

24           sensor_type = PVUtil.getString(pvs[0])

…

 

However I am getting the following error:

 

Traceback (most recent call last):

  File "scripts/lakeshore_input_setup_monitor.py.py", line 24, in <module>

TypeError: getString(): 1st arg can't be coerced to org.csstudio.simplepv.IPV

 

What does this mean?

 

--Ray

 

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