Kyley A PLC is a "Programmable Logic Controller" a piece of hardware that has an embedded language to control industrial machinery
Over the years there has been a merging of PLC's and Process Computers (PLC's evolved from the original relay logic, in fact early ones you programmed in "ladder" logic), there was a "gap" between PLC's and process computers that you could close with a general programming language (I wrote something in Turbo Pascal to control a "flying shear") But things are more specialised now, The interfaces have always been problematic (lack of standards and companies not wanting to interoperate) Neven > Maurice, > Rockwell PLC is quite a specialised system isn't it? its not as > generic as delphi.. Just a curiosity, not a comparison > > On Sat, Sep 19, 2009 at 10:55 PM, Maurice Butler > <likema...@quicksilver.net.nz <mailto:likema...@quicksilver.net.nz>> > wrote: > > Like wise - professional Software developer was self employed for > 10 years, now receiving income by salary from a large > international company. > > I wrote an application using D3, which is still running reliably > in a 24x7 manufacturing envionment, weigh and labelling product > every 3 seconds, and stuffing data into an oracle database. The > qualification is that it either works or it doesn't, if it doesn't > you don't get any more work. The work that i put in to the > development of the application has ment it has run on win98,nt 2k, > xp without any changes. It is also the bench mark that new > projects are compared to. I now work for the company that i wrote > that application for and have been tasked with upgrading or > replacing to include a lot more functionality. > > After downgrading to 2005 I redeveloped my application to use a > Rockwell PLC for another client and gave delphi the boot, > subsequently all installations and varations of it have ment my > money has gone to rockwell for there hardware and software. > > I was looking at upgrading my copy of Delphi - but to be honest I > may well be better off sticking with the Rockwell PLC, not as nice > to code but reliable, occasional bugs that are fixed without > major drama. Espcially if I run into show stoppers like Delphi 2005 > > Maurice > > -----Original Message----- > *From:* delphi-boun...@delphi.org.nz > <mailto:delphi-boun...@delphi.org.nz> > [mailto:delphi-boun...@delphi.org.nz > <mailto:delphi-boun...@delphi.org.nz>] *On Behalf Of *Paul A Norman > *Sent:* Saturday, 19 September 2009 1:09 p.m. > *To:* NZ Borland Developers Group - Delphi List > *Subject:* Re: [DUG] A change in upgrade policy coming from > Embarcadero > > Dear Richard, > > " I however, am a professional software developer." > > I am sure that you are, infact from everything I have heard of > you and your work people should seriously consider looking at > you and your consultancy > for any work espeically in areas of complexity that need > special expertise in advanced programing. > > What I am trying to address here is the changed busines model > that the Delphi Community is being asked to swallow hook line > and sinker. It is true as you say that E need to make money. > What we and they are needing to look at is the model by which > they wish to do so, realizing that we are their cash cows! > > Now what is a "profesional programmer", just one who receives > their income by invoicing directly for progranmming work? > > > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: delphi@delphi.org.nz <mailto:delphi@delphi.org.nz> > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to delphi-requ...@delphi.org.nz > <mailto:delphi-requ...@delphi.org.nz> with Subject: unsubscribe > > > > > -- > Kyley Harris > Harris Software > +64-21-671-821 > ------------------------------------------------------------------------ > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: delphi@delphi.org.nz > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: > unsubscribe _______________________________________________ NZ Borland Developers Group - Delphi mailing list Post: delphi@delphi.org.nz Admin: http://delphi.org.nz/mailman/listinfo/delphi Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: unsubscribe
