Experimental Physics and
Industrial Control System

Dehong Zhang <[email protected]> · Tue, 11 Mar 2008 13:57:26 -0500

Hi Marty,

Thank you very much for your advice!  The problem turned out to be the
-cport option.  It should have been 5064, because I did not specify the
port to use on my frontend (IOC).  And I misunderstood the ALIASes, then
ASL etc.  Now the path is through.

However I still have 2 issues:
1. multi-element PVs timeout -- I tried longer timeouts, no help;
Read operation timed out: some PV data was not read.
bpm36.MINT
    Data type:      DBR_FLOAT (native: DBF_FLOAT)
    Element count:  4096
    Value:          0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
......
CA.Client.Exception...............................................
    Warning: "Virtual circuit disconnect"
    Context: "op=0, channel=bpm36.MINT, type=DBR_FLOAT, count=4096, ctx="atflap2.fnal.gov:6064""
    Source File: ../getCopy.cpp line 82
    Current Time: Tue Mar 11 2008 13:54:58.77628354
..................................................................

2. still get
CA.Client.Exception...............................................
    Warning: "Identical process variable names on multiple servers"
    Context: "Channel: "gateway_vctotal", Connecting to: atflap2.fnal.gov:6064, Ignored: 0.0.0.1:5"
    Source File: ../cac.cpp line 1224
    Current Time: Tue Mar 11 2008 11:31:44.913328026

   on the client end.  On the gateway side, still get 

CAC: Unable to connect because "Invalid argument"

Mar 11 11:33:54 !!! Errlog message received (message is above)
Mar 11 11:33:54 Warning: Virtual circuit disconnect 0.0.0.1:5 
Mar 11 11:33:54 Warning: Virtual circuit disconnect 0.0.0.2:5 

And there is a strange udp connection (on the gateway node):
udp        0      0 atflap2.fnal.gov:32889      255.255.255.255:5065        ESTABLISHED

It seems somehow I am creating a loopback -- but I am not specifying 5065 anywhere.

Please give me more advices.

Thanks and best regards,
Dehong

----- Original Message -----
From: "Martin L. Smith" <[email protected]>
Date: Tuesday, March 11, 2008 7:41 am
Subject: Re: Problem with gateway
To: Dehong Zhang <[email protected]>
Cc: [email protected]

> Hi Dehong,
> 
> On the client side try setting the environment variable:
> EPICS_CA_SERVER_PORT 6064
> 
> before starting the client or trying, for example:
> caget gateway.connected
> 
> Hope this helps,
> Marty
> 
> 
> Dehong Zhang wrote:
> > Hi,
> > 
> > I am trying to set up a gateway (v2_0_2_1 with epics 3_14_8), am having
> > trouble.  It complains about:
> > CAC: Unable to connect because "Invalid argument"
> > 
> > Mar 10 11:39:19 !!! Errlog message received (message is above)
> > 
> > My pv list is called "gateway.pvlist".  It contains:
> > ------------------------------------------------------------------------------------
> > EVALUATION ORDER ALLOW, DENY
> > 
> > Crate1.*        ALLOW
> > bpm36.*          ALLOW
> > 
> > # Convert old Gateway internal process variable names
> > gateway\.\(.*\)            ALIAS     gateway:\1
> > gateway\.\(.*\)Flag        ALIAS     gateway:\1Flag          GatewayAdmin
> > gateway\.alive             ALIAS     gateway:connected
> > gateway\.postEventRate     ALIAS     gateway:clientPostRate
> > ------------------------------------------------------------------------------------
> > 
> > The access list is called "gateway.access".  It has:
> > ------------------------------------------------------------------------------------
> > ASG(DEFAULT) {
> >    RULE(1,READ)
> > }
> > ------------------------------------------------------------------------------------
> > 
> > The command I use is:
> > ./gateway -sport 6064 -cport 5065 -pvlist ./gateway.pvlist -prefix 
> "gateway" -access ./gateway.access
> > 
> > I cannot even access the internal PVs like:
> > gateway:pvtotal
> > gateway:active
> > 
> > Please enlighten me.
> > 
> > Thanks and best regards,
> > Dehong
> > 
> > 
> > 
> > 
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System