Trying to make head or tail of the various specs I've found online for the two signalling specs. Seems most of the differences are merely in voltage levels - (and therefore max data rate due to slew, power consumption, number of receivers etc). Can I simply use a level converter for bi-directional RS423<->RS232 communication? (Assuming I set the baud low enough for RS232 to handle). Cheers, -Dave. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body