Greetings; all wise and all knowing list. I've been working with a Modbus link to a chiller and have found the analyzer found at http://www.win-tech.com to be very helpful. They have a Modscan (read), and a ModSim (write), product. The download is free, but times out after about 4 minutes. The licensing costs are minimal. The scanner runs on a notebook, it does needs a physical comm port to work, as some of the newer PCs may not have that. Regards, Rick Mol ESCO Company IT/Automation Admin. 231.727.6409 rdmol@xxxxxxxxxxxxxxx _______________________________________________________________________ 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