Experimental Physics and
Industrial Control System

Elliott Wolin <[email protected]> · Tue, 03 Feb 2009 16:01:33 -0500

Hi,

I just discovered my old programs that use the PCAS library (3.13) no

longer work with the latest release (3.14.10), and I haven't a clue

why. Is there a document somewhere explaining what has changed?

Below are debug output and errors I get when I run the server and

execute "caget halld_event_count" in another window. The server creates

and serves out a PV named halld_event_count.

Output from server:

 (caget run in another window at this point, see below for caget

output)

pvExistTest for halld_event_count
createPV for halld_event_count
myPV::createChannel for halld_event_count
myPV::read for halld_event_count
...myPV getVAL for halld_event_count

----------dump This=0x81497b8---------
dimension=0 app-type=16 Scalar
prim-type=aitInvalid(aitEnumInvalid) ref-count=1
total-bytes=44, data-size=0, element-count=1
LocalDataFormat
--------------------------------------

filename="../../../../src/cas/generic/casStrmClient.cc" line number=620

server tool changed bounds on request - get notify with

PV=halld_event_count type=19 count=1

...myPV interestDelete for halld_event_count
myPV destroy for halld_event_count

caget errors:

$ caget halld_event_count
CA.Client.Exception...............................................
   Warning: "No reasonable data conversion between client and server types"

 Context: "op=0, channel=halld_event_count, type=DBR_TIME_LONG,

count=1, ctx="read failed""

   Source File: ../getCopy.cpp line 86
   Current Time: Tue Feb 03 2009 15:56:19.360220762
..................................................................
Read operation timed out: some PV data was not read.
halld_event_count              0

Thanks,

--

				Sincerely,
					Elliott

================================================================================

Those raised in a morally relative or neutral environment will hold
		    no truths to be self-evident.

Elliott Wolin
Staff Physicist, Jefferson Lab
12000 Jefferson Ave
Suite 8 MS 12A1
Newport News, VA 23606
757-269-7365

================================================================================

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System