Is the RS232 port on the H50 set the same as on the SP node?  Speed,
parity, etc, all have to be the same, or you won't communicate.

I've worked with a few Serial connected 3494's, and I'd recommend trying to
get an ethernet connection going, if possible.  It's much more commonly
used, so there's a lot more people with experience with it (including the
IBM CE's you have come out to work on it).  Just my $0.02 worth on that,
though.

Nick Cassimatis
nickpc AT us.ibm DOT com

Today is the tomorrow of yesterday.