John was referring to the first couple of versions adapted to EMC2. Modbus has been enabled in the newest version (7.124) in trunk because some people were asking about modbus, the code was already there, and a different person is maintaining Classicladder right now (me). It is experimental and there is no guarantee that it will be included in a released version (I don't think I would physically remove it just change compile flags). At this point I don't even know if it works properly. I believe originally Classicladder was added just as EMC when from version 1 to 2 , there weren't many options as far as HAL modules, so Classicladder made it easier and faster to change logic for different/more complicated setups. As far as having MODBUS in Classicladder , I see no real problem with that. Most times that you would use MODBUS, I would think it would be convenient to use classicladder as well (The GUI should make configuring easier). A PLC with a MODBUS connection seems reasonable. Actually I would like to to see a slave protocol added as well. Then you could have another computer running logic connected through MODBUS. HAL can be used for more then just machine tool control. That's the best thing about HAL is if you don't like/want Classicladder, (or any module) don't use it. Use something else or build something new. I'm sure soon enough a self contained MODBUS module will be released. IMHO if I can have a program do more then one (related) thing then that is better/more integrated. It's pretty easy to have a lot of HAL pins to keep track of. I have read a few times people asking why they would want to learn ladder programming. I think the advantage is it is visual, you can see the changes right away and see quite a big picture at one time. I don't think it's that hard to pick up. I've tried to document things along the way- Classicladder docs were pretty scarce when I started.
> > What about: > ... > From: > Chris Morley > > [Emc-users] classicladder V 7.124 in > cvs > Date: > Tue, 29 Jan 2008 01:32:38 +0000 > (Mon, 17:32 PST) > Greetings. > > I'm just annoncing That I have uploaded a working (HAL asized ) version > of Marc's Classicladder version 7.124. > This is NOT a finished, stable, well-tested version. > I'm looking for testers and opinions. > In particular MODBUS in enabled in this version but I don't have anyway > to test it yet. > ... snip _________________________________________________________________ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
