Fantastic...The new version of classic ladder has the modbus option in the 
config. But the version with EMC 2.1.7 does not have this. This could open 
up alot of I/O for me for a solid operators station. Can the classic ladder 
in EMC be upgraded? If you could check the inputs in classic ladder I could 
turn the pushbutton lights on without tieing up I/O points on my Motenc 
card. I would like to save these for machine critical functions like 
overtravel switches and home switches. If the status of these inputs could 
sent to emc then I could use them to switch modes etc.....

Dave

----- Original Message ----- 
From: "Stephen Wille Padnos" <[EMAIL PROTECTED]>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Thursday, October 25, 2007 8:52 PM
Subject: Re: [Emc-users] Starting a new project


> Dave Keeton wrote:
>
>> Question - I know that classic ladder has modbus capability. Even
>> though EMC does'nt use it, can classic ladder use it for additional
>> I/O points for switches and coils?
>
> Darned good question.
>
> It won't matter for long.  I have a userspace hal<->modbus interface
> working.  It's specific to a particular application at the moment, but
> once we can figure out a reasonable way of specifying modbus endpoints,
> I'll rework it and check it in.
>
> I imagine something similar to pyvcp - an xml-ish file that has the
> slave addresses and register/coil numbers, along with the corresponding
> hal pin names.
>
> - Steve
>
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