Hello Brian. I know of 2 possibilities. You can use a calca block counting the seconds passed by since midnight. When 3600 seconds passed - give a OSP on the clear of the ACCUM. Or if you don=B4t want to link the ACCUM-Reset: use a scheduler like crontab(Unix) or at(windows scheduler) to drop two omset(imp)- commands 1.) Set the Reset to 1 2.) Sleep 2 3.) Reset the Reset to 0 Best Regards, ------------------------ Daniel Weinbrenner Process Automation and=20 Software Development =20 Erpicon software development GmbH Neusser Str. 724- 726 50733 K=F6ln =B7 Germany Tel: +49 (0)221 97460 - 65 Fax: +49 (0)221 97460 =96 99 =20 e-mail: dweinbrenner@xxxxxxxxxx Internet: www.erpicon.de =20 =20 -----Urspr=FCngliche Nachricht----- Von: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] = Im Auftrag von BrianLong Gesendet: Thursday, October 20, 2005 2:32 PM An: Foxboro Betreff: [foxboro] Clearing Accum block There are a number of ways to do this but I though someone out there = might have a "better or clever" way. I need to clear an ACCUM block at the = top of every hour. Thanks in Advance, Brian Long Arkansas Kraft =20 =20 _______________________________________________________________________ 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 =20 foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: = mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Djoin to unsubscribe: = mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Dleave =20 _______________________________________________________________________ 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