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Subject: ai records: pool (SCAN) VS pull (FLNK) VS push (some examples)
From: Benoit <benpaka.spam@gmail.com>
To: EPICS mailing list <tech-talk@aps.anl.gov>
Date: Tue, 10 Dec 2013 18:30:03 +0100
Hi everybody,

I've been looking to obtain concrete examples of the following post: http://www.aps.anl.gov/epics/tech-talk/2012/msg02557.php in order to retrieve my data

I think I get it well for 
  • pool: scan every 5 seconds the value of TempActRdbk
  • push: getting the value of CtrlManualStat read register when CtrlManualCmd write register is updated (this is done in the asynDriver).
However, I don't manage to use the forward link so that when I write in  CtrlManualCmd I want to obtain an updated value of AllInterlocks.
Can someone tell me how to perform, and what I am doing wrong in the use of FLNK:


record(bo, "$(user):CtrlManualCmd")
{
field(DTYP ,"asynInt32")
field(OUT  ,"@asyn($(PORT),$(ADDR),$(TIMEOUT))Ctrl_Manual")
}
record(bi, "$(user):CtrlManualStat")
{
field(DTYP ,"asynInt32")
field(INP  ,"@asyn($(PORT),$(ADDR),$(TIMEOUT))Ctrl_Manual")
field(SCAN ,"I/O Intr")
field(FLNK,"$(user):AllInterlocksRdbk") #or field(FLNK,"$(user):AllInterlocksRdbk.VAL PP") 
}
record(ai, "$(user):AllInterlocks")
{
field(DTYP ,"asynInt32")
field(INP  ,"@asyn($(PORT),$(ADDR),$(TIMEOUT))Ilk_All")
field(SCAN ,"I/O Intr")
}
record(ai, "$(user):TempActRdbk")
{
field(DTYP ,"asynInt32")
field(INP  ,"@asyn($(PORT),$(ADDR),$(TIMEOUT))temp_act")
field(SCAN ,"5 second")
}

--
Benoit RAT


Replies:
RE: ai records: pool (SCAN) VS pull (FLNK) VS push (some examples) Mark Rivers

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