Passive Scanning processing

[Diego Sanz <dshernan80@gmail.com>]

My Doubt is about the processing of a pasive Record with an input Link PP, with another passive record connected to.  In point 1. and 1.3  in the EPICS Record Reference Manual comes information related to it. I understand that every passive record is processed when I change its VAL. e.g.,  I've got the next record in my Db

 

record(ai,inp0){

field(SCAN,"Passive")

}

 

...then I run the IOC, and every time I change the VAL, (e.g., with caput command: caput inp0 124) , I can see with camonitor command that the PV value is changing.

 

Now we connect this Record to the next record:

 

record (calc,calcinp){

field(SCAN,"PAssive")

field(INPA," inp0 PP")

field(CALC,"A+45")

}

 

What I understand from reference manual, is that a passive record with a PP Link (in this case calcinp) with another passive record connected to (in this case inp0), is processed if the other record (inp0) is processed, and I can make  inp0 to be processed executing the command "caput inp0 198".

 

But the result is that every time I change the value of inp0 with the caput command, the calcinp record is not processed...why?

 

Thanks for the answers