Re: [foxboro] set_confirm for boolean
- From: "Heath, Graham" <gheath@xxxxxxxxxxx>
- To: "'foxboro@xxxxxxxxxxxxx'" <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 25 Jun 2002 04:23:08 -0400
Sorry alex
I tried both setting to TRUE and FALSE. with the variable set to 1 or 0.
this weas a success.
I agree the issue is in the data format thats why I went to writing from a
char variable this seemed easier than than bit twiddling from an integer
rgds
Graham
PS with the code I threw together setting x2 to anything other than zero
will set the value TRUE
so without worrying too much how or why the example prsesented worked.
Which in the end is whats required!! :<).
regds
-----Original Message-----
From: Johnson, Alex (Foxboro) [mailto:ajohnson@xxxxxxxxxxx]
Sent: 24 June 2002 21:18
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] set_confirm for boolean
Ronny,
The issue is the data format.
If you look at the om_udat.h header file and think about what it is telling
you you will come to realize that
a Boolean true is:
0x1000
and a Boolean FALSE is
0x0000
Graham's example works because he is setting the variable to false.
Yours fails because you want true.
So, be sure that the correct bit is set on your input to the setval
function.
If you pass and integer (as I usually do), set it to 0x1000 for TRUE and
0x0000 for FALSE. You can also use -1 for TRUE since it also sets the
correct bit.
Hope this helps.
Regards,
Alex Johnson
Invensys
10707 Haddington
Houston, TX 77063
713.722.2859 (office)
713.722.2700 (switchboard)
713.932.0222 (fax)
ajohnson@xxxxxxxxxxx <mailto:ajohnson@xxxxxxxxxxx>
Come to the Invensys Showcase: http://www.invensysshowcase.com/
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-----Original Message-----
From: De Maeyer Ronny [SMTP:Ronny.DeMaeyer@xxxxxxxxxx]
Sent: Monday, June 24, 2002 2:16 PM
To: 'foxboro@xxxxxxxxxxxxx'
Subject: [foxboro] set_confirm for boolean
Hi all,
I am trying to set a boolean from whitin a c-program.
I use the following code : (part of the programm)
data_len=4;
strcpy(temp,"UCM4:CHECKSAP.IN");
x2=1;
status=OM_BOOL;
rtn=set_confirm(temp,VARIABLE,0,&x2,&status,&data_len);
My problem : whatever I use for x2 (0,1, true,T, false,F) the input
of the
bloc does not change.
when I use 0 or 1 I declare x2 as an integer, for Trur,T,False or F
I
declare x2 as char.
In the manual (BO193BC) page 19 under set_confirm they say for
OM_BOOL is a
byte with True/False values only.
Can somebody explain what I am doing wrong ?
Thanks in advance,
Ronny
> Ronny De Maeyer
>
> Fluxys n.v.
> LNG TERMINAL ZEEBRUGGE
> H.V. Wolvensstraat 3, Kaai 615
> B - 8380 ZEEBRUGGE
> Tel.: (++32) (0)50 36 66 24 (direct)
> Tel.: (++32) (0)50 36 66 11 (central)
>
> mailto:ronny.demaeyer@xxxxxxxxxx
> http://www.fluxys.net
>
>
>
>
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