Experimental Physics and
Industrial Control System

Eric Norum <[email protected]> · Thu, 9 Sep 2010 19:29:56 -0700

You have to set EPICS_CA_MAX_ARRAY_BYTES on both the server (IOC) and client ends.

On Sep 9, 2010, at 7:17 PM, wantianmin wrote:

> Hi all,
> I am use a edm client get a waveform pv(640*480 ),the IOC has enough
> memory,but only one client can get the pv data,when another client try
> to connect to this pv,the client get the error message:
> CA value callback('pic1'): No data, CA status The requested data
> transfer is greater than available memory or EPICS_CA_MAX_ARRAY_BYTES
> 
> But ,I set the EPICS_CA_MAX_ARRAY_BYTES to a big number(1600000000),is
> there some other options need to be configured?
> Thanks for your help.
> wantianmin
> 

-- 
Eric Norum
[email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System