Re: [foxboro] Object Manager question

  • From: Sascha Wildner <swildner@xxxxxxxxxx>
  • To: foxboro@xxxxxxxxxxxxx
  • Date: Tue, 31 May 2005 07:33:24 +0200

Sascha Wildner wrote:

> Sometimes these writes do not happen (randomly, it seems) and after 
> double- and triple-checking the sequence code I now suspect that writing 
> to the same block at the same time from different sequences is the problem.

In fact, this wasn't the problem.

The problem was that my code relied (indirectly, via the day of the week 
algorithm) on the STATION block's DAY parameter having updated some 10 
seconds past midnight while (so I found later in FoxDoc) in reality it 
can take up to 30 seconds for it to do so.

While it is true that this is documented and while it is also (at least 
partly) true that "you just have to know these things" it still seems 
very unusual (design flaw) since you'd really expect it to update 
faster. This is even more true when you rely on some prebuilt code which 
in turn relies on that parameter. In my case it was the "day of the week 
CALC block" someone posted to this list a while ago and which inherits 
this 30 second inaccuracy.

-- 
Regards,

Sascha Wildner
erpicon Software Development GmbH
Neusser Str. 724-726
50737 Köln
Germany

Phone: +49 221 9746069
Fax:   +49 221 9746099
eMail: swildner@xxxxxxxxxx

 
 
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