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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: Channel Access Writes Failed on Asyn Record Writable Fields |
| From: | Wesley Moore <[email protected]> |
| To: | William Lu <[email protected]> |
| Cc: | [email protected] |
| Date: | Wed, 16 Jun 2010 07:30:22 -0400 |
- caput again on the LS450PS:asyn.AOUT field gave the same error message as before.
I want to see the IOC output when you do that caput, after turning on the asynTraceMask in the previous step. I think sure you should see some diagnostic output.
Please also send the output of the dbpr command.
Did you try Ralphs suggestion of doing the following from the iocsh prompt?
dbpf LS450PS:asyn.AOUT "hi there"
Mark
________________________________
From: William Lu [mailto:[email protected]] Sent: Tue 6/15/2010 4:43 PM To: Mark Rivers Cc: [email protected] Subject: Re: Channel Access Writes Failed on Asyn Record Writable Fields
Thank you for the help.
- Sending a string from the asynRecord.edl screen gave me the error message same as the error message I got from caput.
- The .ERRS field contains 100 zero's and these values do not change as I tried to caput on the record's AOUT field.
- dbpr command gave no data pointing to the problem.
- "asynSetTraceMask sockserv 0 0xff" generated the following message on the iocsh screen: sockserv -1 exception 3 occurred calling exceptionUser sockserv -1 exception 3 occurred calling exceptionUser LS450PS:asyn: exception 3
- caput again on the LS450PS:asyn.AOUT field gave the same error message as before.
At the point, I don't know the problem yet.
Thanks, William Lu
Mark Rivers wrote:
I am not sure what the problem is, but here are some ways to find out:
- Load the medm screen for the asyn record (asynRecord.adl). You can then interactively send commands to the port and observe the response and any error status.
- The asyn record has an error string field (.ERRS) which may contain useful information.
- Execute the following iocsh command to get all the record field values: dbpr LS450PS:asyn 5
- Enable all debugging on that asyn port with the following iocsh commands
asynSetTraceIOMask sockserv 0 0x2 asynSetTraceMask sockserv 0 0xff
Then do your caput again or type in the asyn records .AOUT text widget and see if there is useful information in the output.
Mark
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of William Lu Sent: Tuesday, June 15, 2010 2:40 PM To: [email protected] Subject: Channel Access Writes Failed on Asyn Record Writable Fields
I am having problems with channel access writes on asyn record's writable fields such AOUT and PORT. I created the following asyn tcp/ip
port and the asyn record:
In a startup iocsh script: drvAsynIPPortConfigure("sockserv","127.0.0.1:9099",0,0,0)
The asyn record: record(asyn, LS450PS:asyn) { field(DTYP, "asynRecordDevice") field(PORT, "sockserv") field(ADDR,"0") }
After the record has been loaded to the ioc, I cannot write the AOUT or PORT fields of the record through channel access. When I caput on those
fields, I got the error messages like the following:
>caput LS450PS:asyn.AOUT "abc" Old : LS450PS:asyn.AOUT CA.Client.Diagnostic.............................................. Message: "Could not perform a database value put for that channel" Severity: "Warning" Context: "detected by: devl17.acc.jlab.org:5064 for: LS450PS:asyn - with request chan=LS450PS:asyn.AOUT op=1 data type=DBR_STRING count=1" .................................................................. New : LS450PS:asyn.AOUT
What is the problem? Any help would be gratefully appreciated.
William Lu Jefferson Lab
-- Weiwei Lu 757-269-7476 [email protected]
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