Ken, OSI has an I/A interface that runs as a background process in Unix. It uses FoxAPI to open OM lists and works extremely well and is fairly easy to install and configure. If you have a support agreement with OSI, you can easily download it from OSI's support web site. It comes with excellent documentation and you'll probably be able to install it and get it working on your AW51F without too much trouble. Tim Lowell Control Systems Engineer Tesoro Petroleum Company 210-283-2929 (w) 210-253-0225 (c) tlowell@xxxxxxxxxxx -----Original Message----- From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On Behalf Of Moore, Kenneth, Celanese/US Sent: Thursday, November 08, 2007 7:27 AM To: foxboro@xxxxxxxxxxxxx Subject: [foxboro] Osi PI and AW51 which way? =3D20 Hey folks, Got a project in the works to add a PI historian to the site, there appears to be several ways of connecting PI to I/A.=3D20 We have a small installation, two WP51B (ver 6.3), one AW51B (ver 6.3), and one AW51F (ver 7.1). The F box is already running Aim* = historian.=3D20 What would be the best connection, Fox API, Aim API, or Aim OPC on a windoze box? Thanks Ken Moore Celanese Enoree, SC =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