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Subject: Re: R3.15.6 calc string doesn't accept LA, LB, LC, etc...?
From: Michael Davidsaver via Tech-talk <tech-talk@aps.anl.gov>
To: Neil Hamilton Jr <neil.hamilton.jr@gmail.com>, tech-talk@aps.anl.gov
Date: Tue, 19 Mar 2019 19:56:11 -0700
On 3/19/19 7:50 PM, Michael Davidsaver wrote:
...
> Uses a Channel Access list

Of course I should have typed 'Channel Access link'.

> to process '$(P)INC' each time '$(P)WATCH' changes.
> This can be extended with additional inputs INPB ...
> 
> 
> On 3/19/19 5:42 PM, Neil Hamilton Jr via Tech-talk wrote:
>> 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 <http://RESULT.LA>")
>>    field(INPE, "RESULTINPE")
>>    field(INPD, "RESULT.LC <http://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
> 


References:
R3.15.6 calc string doesn't accept LA, LB, LC, etc...? Neil Hamilton Jr via Tech-talk
Re: R3.15.6 calc string doesn't accept LA, LB, LC, etc...? Michael Davidsaver via Tech-talk

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