Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Fri, 16 Feb 2001 17:32:17 -0600

Brian,

The way we do this is to make the data acquisition program be a channel
access client, rather than a channel access server.  The scan software
writes a 1 to a local "Busy" record, which is just like a binary output
record except it does not do the forward link until its value goes back to
zero.

The acquisition program monitors that Busy record. When it goes to 1 it
starts collecting data.  When the data acquisition is done it sets the Busy
record back to zero, which lets the scan continue.  This method does not
have a problem with a 30 second limit.

Mark

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System