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 _______________________________________________________________________ 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