Re: [Emc-users] How does axis communicate with emc?
alan wrote:
I want to connect directly to emc from some software I am developing. So
far my software generates G codes but I want to cut out that stage. This
is out of interest and in the spirit of investigation. By the way I
would like to know the easier ways again out of curiosity.
The NML libraries are relatively independent from the rest of EMC2. You
could just make a header/class interface/whatever the C# equivalent is
for the NML library - more or less a c# implementation of
emc/nml_intf/emc.{cc,hh}. Where you may get into trouble is with the
emc.hh file - that's where the specific NML messages are defined, and
that's GPL - not LGPL. Anything based on it would have to be GPL as
well (hopefully not a problem :) ).
I suspect that the easier methods are based on using one or more of the
existing programs that already have NML implementations: emcsh or
emcrsh. And maybe HALUI or similar. Then there's the python library,
which can be pretty easily used for various functions (see jdi.py for a
simple example).
You may also want to think about going straight to HAL, if you want to
bypass the interpreter anyway. (the trajectory planner is still quite
useful though)
- Steve
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Re: [Emc-users] How does axis communicate with emc?
Alan, In addition to what Stephen said, see if emcrsh does what you want. Take any one of the sim configurations (tkemc is a good one) and add: loadusr emcrsh to one of the hal files (servo_sim.hal for example) Run EMC, then open a terminal session and enter: telnet localhost 5007 After it connects, type help. To establish a session with EMC, enter: Hello EMC client 1.0 To get rid of the command echo, enter: Set echo off To command the machine, enable the session with: Set enable EMCTOO Alternatively, you can run from another computer over the network by entering: telnet DNS or IP address 5007 Your program just needs to send and process the same commands as you type into the telnet session. So long as you write your application from the interface specification, i.e. specifically by not borrowing any of the code from the server side, there should not be any GPL implications. Well on this specific interface anyway. You can also find the interface definition here in the source code: http://cvs.linuxcnc.org/cvs/emc2/src/emc/usr_intf/emcrsh.cc?rev=1.10;content -type=text%2Fplain Scroll down one page. I need to put this into a wiki page. BTW, I just checked in an update enhancing options that can be specified on the command line. To use these, you will need to build from source until the next release. HTH, Eric I want to connect directly to emc from some software I am developing. So far my software generates G codes but I want to cut out that stage. This is out of interest and in the spirit of investigation. By the way I would like to know the easier ways again out of curiosity. Thanks Alan - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] How does axis communicate with emc?
I am interested in understanding how Axis communicates with emc because I want to try sending NML messages to emc from a c# application running under mono (we all have strange interests of one sort or another!!). Can someone suggest a starting point for me. I am new to linux but have been a programmer for many years. Thanks Alan - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] How does axis communicate with emc?
Alan, Are you trying to directly send motion commands to EMC or just want to write your own .NET based custom user interface? If the latter, there are much easier ways than going through NML. Regards, Eric I am interested in understanding how Axis communicates with emc because I want to try sending NML messages to emc from a c# application running under mono (we all have strange interests of one sort or another!!). Can someone suggest a starting point for me. I am new to linux but have been a programmer for many years. - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100url=/ ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
