Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <[email protected]> · Tue, 12 Nov 2019 13:43:02 +0000

Hi Enum,

Which record is the "button" you are pressing?

Please explain the intended logic in your database, i.e. please describe each record is intended to do.  You are scanning all of the records at 0.1 second which does not seem correct.

If you just want to turn an LED on for 2 seconds and then turn it off I don't see why you need a counter that is updating an integer count at all.  For example the "seq" record in EPICS base can set an output record to 1 (turning on the LED), wait for 2 seconds, and then turn it off.  Each time you process that record it will do that.

Mark

________________________________
From: Tech-talk <[email protected]> on behalf of enum riz via Tech-talk <[email protected]>
Sent: Tuesday, November 12, 2019 12:07 AM
To: Tech-talk
Subject: Reset counter

Hi Mark

i made a counter which works fine when i press button it starts and after a fixed value it stop.but whenever i press again button it didnot work.(Independently it works but when i merge this in my file with other code it didnot start with next press button)
i am sending code please tell me how it will reset and starts again when button press. I want a duration of 2 seconds. Led On for 2 second and then off.

record(bi,     "b"){
 field(SCAN,  ".1 second")
 field(ZNAM, "0")
 field(ZNAM, "1")
}

record(calcout,  "t"){
 field(SCAN,  ".1 second")
 field(INPA, "b")
 field(CALC, "A==1?1:0")
}

record(calcout,  "counter"){
 field(SCAN,  ".1 second")
 field(VAL, "0")
 field(INPA, "counter")
 field(INPB, "1")
 field(INPC, "t")
 field(CALC, "C==1&&(A<=9)?(A+B):A")
}

record(calcout,  "reset"){
 field(SCAN,  ".1 second")
 field(INPA, "counter")
 field(CALC, "A<=9?A:0")
}

record(calcout,  "rst"){
 field(SCAN,  ".1 second")
 field(INPA, "reset")
 field(CALC, "A==1?1:0")
}

record(b0,     "out"){
 field(SCAN,  ".1 second")
 field(OMSL, "closed_loop")
 field(DOL, "rst")
 field(ZNAM, "0")
 field(ZNAM, "1")
}

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System