Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	R3.15.6 calc string doesn't accept LA, LB, LC, etc...?
From:	Neil Hamilton Jr via Tech-talk <[email protected]>
To:	[email protected]
Date:	Tue, 19 Mar 2019 20:42:11 -0400

Hey all,

I'm trying to create a calc record that looks at previous values to increment a count. See below

record(calc, "RESULT_A")
{
   field(SCAN, ".05 second")
   field(INPH, "RESULT_A.LG")
   field(INPA, "RESULTINPA")
   field(INPC, "RESULTINPC")
   field(INPB, "RESULT.LA")
   field(INPE, "RESULTINPE")
   field(INPD, "RESULT.LC")
   field(INPG, "RESULTINPG")
   field(INPF, "RESULT_A.LE")
   field(CALC, "A#B?1:0+C#D?1:0+E#F?1:0+G#H?1:0")
}

If I change B to LA in the calc string above I get this error during dbLoadRecords

RESULT_A.CALC: Syntax error, unknown operator/operand in _expression_ "A#LA?1:0+C#D?1:0+E#F?1:0+G#H?1:0"

First I'd like to ask if the 'last' fields are usable this way. From the record reference manual it appears they are. Second, does anyone have a better way of just incrementing a count anytime the inputs change? Any help is very much appreciated.

Neil Hamilton Jr

Replies:: Re: R3.15.6 calc string doesn't accept LA, LB, LC, etc...? Michael Davidsaver via Tech-talk; Re: R3.15.6 calc string doesn't accept LA, LB, LC, etc...? Mooney, Tim M. via Tech-talk

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ANJ, 19 Mar 2019

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System