Experimental Physics and
Industrial Control System

All,

 

I am encountering an interesting problem and would again appreciate your insights.

 

Essentially, I have a fanout record and asub record that resemble the following pseudocode:

 

record(fanout, “fanout_rec”)

{

              field(SCAN, “Passive”)

              field(LNK0, “aao_rec_1”)

              field(LNK1, “aao_rec_2”)

              field(LNK2, “asub_rec”)

}

 

record(asub, “asub_rec”)

{

              field(SCAN, “Passive”)

              field(SNAM, “c_code”)

              field(INPA, “aao_rec_1”)

              field(FTVA, “CHAR”)

              field(NOA, 2048)

              field(INPB, “aao_rec_2”)

              field(FTVB, “DOUBLE”)

              field(NOB, 2048)

}

 

My goal was to first process the first two aao records so they contain the most up-to-date values before processing “asub_rec”. When I attempt to retrieve the values from both aao records within “c_code”, it is getting previous values that they contained prior to their latest processing.

 

For instance, if “aao_rec_1” contained “hello”, then when I print out “(CHAR*)prec->a” in “c_code”, it prints out nothing. But when I process it again, but with a different value, I print out “hello”, rather than the latest value it has.

 

I’m beginning to think it might be better to use the PP flag for INPA and INPB like this:

 

record(asub, “asub_rec”)

{

              field(SCAN, “Passive”)

              field(SNAM, “c_code”)

              field(INPA, “aao_rec_1 PP”)

              field(FTVA, “CHAR”)

              field(NOA, 2048)

              field(INPB, “aao_rec_2 PP”)

              field(FTVB, “DOUBLE”)

              field(NOB, 2048)

}

 

Any thoughts or suggestions?

 

Andy