On Sat, 2007-12-29 at 10:04 -0800, Kirk Wallace wrote:
> On Fri, 2007-12-28 at 18:33 -0500, Dave Keeton wrote:
> > How did you get it to work with EMC2.2.2?
> 
> I may be wrong, and you should wait for Peter to get back from
> walk-about, for a reply, but I suspect he hasn't. I think that he is
> offering options to people seeking Modbus hardware. Using Modbus with
> EMC is another issue.
> 
> There have been rumors that Modbus is available with EMC, but for me,
> finding any information on it, is like finding hen's teeth. It appears
> that EMC provides Modbus support via Classic Ladder, this means that it
> is restricted to non-real-time, which shouldn't be a big deal(?). On the
> Classic Ladder site:
> 
> http://membres.lycos.fr/mavati/classicladder/
> 
... snip

I downloaded and started playing with ClassicLadder. In the EMC
documentation:

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ClassicLadder

it indicates that the Config button is not available. I assume that is
because connecting ClassicLadder to the physical world is being done by
HAL instead of the Config button? The Config button is also where Modbus
is configured. In classicladder.c it seems the Modbus server entries
that are in the generic ClassicLadder are missing in the EMC version. If
this is true, then there currently is no Modbus support in EMC?

-- 
Kirk Wallace (California, USA
http://www.wallacecompany.com/machine_shop/ 
Hardinge HNC lathe,
Bridgeport mill conversion, doing XY now,
Zubal lathe conversion pending)


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