[foxboro] NetFoxAPI question

From: "Schouten, Frits JF" <Frits.Schouten@xxxxxxxxxxxxxxxxxx>
To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
Date: Tue, 7 Aug 2012 09:00:18 +1200
Hello all,
I have, yet again, an issue with NetFoxApi. This time it's communication to I/A 
Series Historian.
While we transfer from Unix to Windows on several plants there is the need to 
get user applications to work on the Windows box and to start  gathering data 
from the historian (reduction groups) while the historian is still on the Unix 
box.
With the first plant this went fine but I'm now doing the same thing on another 
plant and the data gathering from the historian (reduction groups) is failing 
miserably.
The key difference is the Historian on the Unix boxes. In the first instance it 
was Aim* and on the other plant it's the I/A Series Historian.
The program I'm using is the same on both windows hosts and on the second 
system the data I get back is always 0 for any point in any reduction group. 
Interesting thing is that, when I specify $SAMPLE instead of REDUCE I do get 
live data back.
On the second Windows host the user application happily communicates with the 
correct historian, returns back all the reduction groups on that historian, all 
points in each reduction group and also the reduction group actions like avg or 
sum or whatever but never any values. The values are always 0.
To get the data out of the reduction groups I use GetHistData as per NetAPI MFC 
Class specifications using method 2 (This method applies to I/A Series and 
AIM*Historian instances.)

Is there any way, on the Unix box, to check if the call to the I/A Series 
historian is correctly processed?
Or has anyone done something simular and got it to work?

Regards,
Frits Schouten
Principal Engineer
Process Computing Department
Aukland:  +64 +9 375 8111 ext 5261
Waiuku:   +64 +9 236 5911 ext 5261
Mobile:   021 963894
Email:   
Frits.Schouten@xxxxxxxxxxxxxxxxxx<mailto:Frits.Schouten@xxxxxxxxxxxxxxxxxx>


________________________________


NOTICE - This message and any attached files may contain information that is 
confidential, legally privileged or proprietary. It is intended only for use by 
the intended recipient. If you are not the intended recipient or the person 
responsible for delivering the message to the intended recipient, be advised 
that you have received this message in error. Any dissemination, copying, use 
or re-transmission of this message or attachment, or the disclosure of any 
information therein, is strictly forbidden. BlueScope Steel Limited does not 
represent or guarantee that this message or attachment is free of errors, virus 
or interference.

If you have received this message in error please notify the sender immediately 
and delete the message. Any views expressed in this email are not necessarily 
the views of BlueScope Steel Limited.

 
 
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
 
foxboro mailing list:             //www.freelists.org/list/foxboro
to subscribe:         mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe:      mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
[foxboro] NetFoxAPI question

Other related posts:
