All good suggestions. Maybe what you need is to write a PRIV program to do a sendio to ldev 20 no matter where the console is or who is logged on. John Zoltak North American Mfg Co > -----Original Message----- > From: Sam Knight [SMTP:[log in to unmask]] > Sent: Wednesday, May 13, 1998 12:52 PM > To: [log in to unmask] > Subject: Re: [HP3000-L] HP3000 968 Parallel Port > > On Wednesday, May 13, 1998 12:29, WirtAtmar wrote: > > John Zoltak writes: > > > > > Monitoring for a voltage change on data-out would not work if > someone > > > moves the console. > > > > The console messages aren't a necessary condition of the Keep Alive > circuit, > > merely icing on the cake. A small job sending a message to Port 20's > session > > every 90 seconds would be all that's necessary, regardless of > whether or not > > it was the console at the moment. > > > > I would suggest the message be "Esc A CR LF". This message would > cause the > > cursor on the terminal to simply recycle in place. > > > > What would kill the circuit would be if someone should sign on to > another > > session on the Port 20/console terminal. The Keep Alive job would > have to be > > restarted with the new session number entered. Alternatively, with > 10 minutes > > more programming, the program could be made to seek out and find the > session > > number of the Port 20 device automatically. The only killer would > then be that > > someone would simply sign the terminal off by doing a ":BYE". But I > would > > suspect you'd find that out in about two minutes :-). > > > > Wirt Atmar > > > > > > The job sending the messages could check to see if a session for port > 20 existed and if not > do a STARTSESS. > -- > Sam Knight Email: [log in to unmask] > Senior Programmer/Analyst Phone: (904) 745-7509 > Jacksonville University Fax: (904) 745-7149 > Jacksonville, FL 32211