Check out:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ClassicLadder_Ver_7.124
I think this is still true:
>>6.6. %QF and %IF variables
Classicladder now can connect to float pins. Classicladder does not yet
internally handle floats, so it cuts the floating point off leaving an
integer. Allows connections to float pins with out using a conversion
component. The default number is 10 each.
<<
Dave
On 7/28/2014 2:42 AM, Marius Liebenberg wrote:
> Aram
> You should be able to put in a formula in any input box. Something like
> "if V < value then ...."
> I suggest that you install a stand alone classic ladder editor to test
> your script with. It is easier this way to start off with. You can have
> a look at the help to assist you.
> The classic ladder software in linuxcnc has a standalone version as well
> that is offered by the original author.
>
>
> On 2014-07-28 07:34, a k wrote:
>> Hi
>> Dave
>> interesting does Classic Ladder has ability to read float number - like
>> value of electrical current -- that can fluctuate ( read output some some
>> sensor etc) , do calculation and make output also float number - like any
>> value between 0 +5 V DC ?
>>
>>
>>
>> thank you
>> aram
>>
>>
>>
>>
>> On Sun, Jul 27, 2014 at 8:16 PM, Dave Cole <[email protected]> wrote:
>>
>>> Aram,
>>>
>>> I don't understand what you want to do but that welder has a very
>>> limited duty cycle.
>>>
>>> If you weld continuously it will overload and shutdown in less than 15
>>> minutes.
>>>
>>> I use PLCs all of the time and know the RS 500 controllers and
>>> software. The AB controllers are much easier to use if you have to
>>> write more than about 25 rungs. Siemens S7-1200 controllers are even
>>> easier to use. If you need something less than about 25 rungs Classic
>>> Ladder works fine. Obviously Classic Ladder has a huge price
>>> advantage. :-)
>>>
>>> You can use the 7i37 digital I/O with Classic Ladder if you have any I/O
>>> points left.
>>>
>>> Dave
>>>
>>>
>>>
>>> On 7/27/2014 4:28 PM, a k wrote:
>>>> hi
>>>> i am working on 2nd part of my project which is integration of
>>>> metal depositor what will be welter like this
>>>> http://www.harborfreight.com/90-amp-flux-wire-welder-68887-8494.html
>>>>
>>>> i will need some plc that can control cnc machine with 0 --5V DC
>>>> and control speed of welder.
>>>>
>>>> Current (A amperage) of welding process -main parameter.
>>>> can i use input power parameter -- 110 V AC 20 A - to estimate current of
>>>> real time welding process?
>>>>
>>>> I know some rs 500 logic -
>>>> is using of EMC2 Classicladder to integrate welder and cnc mill good
>>> idea?
>>>> i want to keep existing cnc mill as a separate unit .
>>>>
>>>> if i will use EMC2 Classicladder only as a integrator of welder to
>>> existing
>>>> cnc mill what board/s do i need - hardware ?
>>>>
>>>> i have 2nd set mesa 5i20/7i33/7i37-- use them or there is something
>>> better?
>>>> thank you
>>>> aram
>>>>
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