Experimental Physics and
Industrial Control System

John Dobbins <[email protected]> · Thu, 24 Apr 2008 10:53:23 -0400

Dear All,
I have a waveform record which reads consecutive values from hardware
memory (happens to be Modbus over ethernet). I then use a subArray
record to pick out individual values. However if the hardware goes
off-line (so the waveform is temporarily invalid) the subArray record
changes its INDX field to 0! When the hardware comes back on-line the
subArray record now points to the wrong location in the waveform.
Is this intended? Suggestions for avoiding this situation?
John Dobbins
Lab for Elementary Particle Physics
Cornell University

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System