This is probably a long shot, but has anybody else out there attempted to connect a Saab tank gauging Modbus interface to the I/A system via an FBM230? One of our refineries just cut over their Saab interface to I/A and they have intermittent communication time-outs every hour or so, which causes every point to briefly smurf and then recover. They are trying all the usual Modbus communications troubleshooting methods, but if someone had already seen and solved this particular problem with the Saab interface, it might be helpful to us. Thanks, Tim Lowell Tesoro tlowell@xxxxxxxxxxx _______________________________________________________________________ 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