Hi Sean,
You are right. The proper call to get this value is omx_getval, but I couldn´t
find any example of its use and all the times I tried to use it, were not
successful. Also, the proper call to set the ACK bit in the SUP_IN parameter
(this is not the ACK bit like we know for alarms) is st_setcnf. This bit could
be set using special OM calls like this, but I couldn't find any example of its
use. This ACK bit is used for SSC (Supervisory Setpoint Control) handshake when
you need to put a controller in supervisory control mode.
Ignacio
-----Mensaje original-----
De: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] En ;
nombre de Redmond, Sean S
Enviado el: lunes, 04 de enero de 2016 10:37 p.m.
Para: foxboro@xxxxxxxxxxxxx
Asunto: Re: [foxboro] C code for reading BLKSTA
Hi,
I think bit extension do not work with get/set val.
BLKSTA is a packed long so you will have to bit match it if you want the SE
parameter. If you are only interest in SE then you can use C:B.SE The ACK
parameter is not settable well the UNACK parameter is not settable. The only
way I know how to acknowledge an alarm is via the display manager command
almack C:B
Sean
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On ;
Behalf Of QUEIROLO, IGNACIO ESTEBAN
Sent: Tuesday, 29 December 2015 4:51 a.m.
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] C code for reading BLKSTA
I need to make a C program to get a value of the BLKSTA parameter. I have this
program from the Sun Compiler installation notes with the modifications
required to get the value of the BLKSTA.SE parameter:
#include <stdio.h>
#include <stdlib.h>
#include <fox/om_user.h>
#include <fox/om_ecode.h>
main()
{
unsigned int value; /* object value */
unsigned int status; /* object data type */
int data_len; /* data length */
getval ("COMPOUND:BLOCK.BLKSTA.SE", VARIABLE, 0, &value, &status,
&data_len);
printf ("The value is = %f\n", value); }
Is this code right?
Also I have to use the setval call to set the SUP_IN.ACK parameter. Does
anybody have some example to accomplish this?
Thanks!
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