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<== Date ==> | <== Thread ==> |
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Subject: | Re: Read PV value Attributes XML |
From: | Hugo Slepicka via Tech-talk <tech-talk at aps.anl.gov> |
To: | Douglas Araujo <douglas.araujo at lnls.br> |
Cc: | tech-talk <tech-talk at aps.anl.gov> |
Date: | Mon, 26 Oct 2020 16:39:06 -0700 |
Hi,
I'm trying to set some attributes using XML, and I am had problem with some pvs.
Example XML file:
<?xml version="1.0" standalone="no" ?> <!-- Attributes --> <Attributes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="../../../../../ADCore/XML_schema/NDAttributes.xsd" > <Attribute name="NumExposures" type="EPICS_PV" source="CAT:S:cam1:NumExposures_RBV" datatype="DBR_NATIVE" description="Number of exposures manufacturer"/> <Attribute name="m1_velocity" type="EPICS_PV" source="CAT:S:m1.VELO" datatype="DBR_NATIVE" description="Motor 1 Velocity"/> <Attribute name="photodiode" type="EPICS_PV" source="CAT:C:RIO03:0215B:ai1 datatype="DBR_NATIVE" description="BIM01 - Photodiode"/> </Attributes>
The two first lines and works fine. The first is a PV from simDetector IOC, (The same IOC where I'm using the HDF5Plugin and using the XML file). The second is a motorRecord Simulated IOC, that is running in the same host that first ioc.
But, the last one, is returning the value "nan". This specific IOC that provide this PV is running in another host. However, I can read the value using caget:
douglas.araujo@cat-gui:/usr/local/epics/apps/config$ caget CAT:C:RIO03:9215B:ai1
CAT:C:RIO03:9215B:ai1 0.000247466
douglas.araujo@cat-gui:/usr/local/epics/apps/config$ cainfo CAT:C:RIO03:9215B:ai1
CAT:C:RIO03:9215B:ai1
State: connected
Host: s-cat-c-rio03.abtlus.org.br:5064
Access: read, write
Native data type: DBF_DOUBLE
Request type: DBR_DOUBLE
Element count: 1
I'm using the 3.3.1 ADCore Version.
I read the documentation and saw that this is a behavior when the pv is not connected. But my pv is connected. Need I set some parameter on ioc to get PV from another host ? Or someone have any ideas about this behaivor ??
Regards.
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