Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Thu, 23 Feb 2012 15:33:20 +0100

Chris,

You need a beacon anomaly that your clients can see, so they rebroadcast
their unresolved names.

Quick-and-dirty solution:
The easiest way to create a beacon anomaly is to start up an IOC. Create
an empty soft IOC on a machine on the clients' network (the softIoc
executable from base is fine). Set up a cron job that starts the IOC,
waits a second, then kills it.
Whenever that cron job runs, all clients on the local network will try
to resolve their channels.

~Ralph

On 23.02.2012 14:18, Chris Slominski wrote:
> I want to be able to force my EPICS channel access client to begin a
> new search for currently disconnected channels.We have small short
> term pc104 iocs come and go and sometimes they are  not configured
> correctly to broadcast when they have been booted up. A client
> listening to the channels won't see a beacon anomaly and  begin the
> channel search sequence.
>
> I can see a couple of ways to do this.
>
> - Send a network beacon to the CA Repeater.
> - Issue a search for some non-existent channel.
>
> Please advise on what is a good way to do this. Example code or
> references to EPICS source code are very welcome, as I am neither
> familiar with EPICS base software, nor am I an experienced network
> programmer. My client software uses EPICS 3.13.10.
>
>       Chris
>
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System