Floating variables in Classicladder

Hello to all.......

I have a problem with comparison modules in Classicladder.......

Is posible to work with floating variables in Classicladder??? (but in floating format).-

In my case, i need to make a comparison in floating format, but the values are converted to S32 automaticly.-

any help will be sincerely grateful .-

Thankyou very much.-

Sebastian

No classicladder does not use floats internally.
as you found, they are converted to integers.
The float pins are just for convenience of connecting directly to floats
without using a conversion component.

ok...... so is posible to make a conditional redirectioning of a floating variable?

p.e:

if A=0 then float out 1 => float in 1

if A=1 then float out 1 => float in 2

is posible to make this in emc2 (with Classiclader or werever)

Thankyou very much.-

Sebastian

look at the component tristate_float :

www.linuxcnc.org/docs/devel/html/man/man9/tristate_float.9.html

maybe that could help you.

Yes, its working perfectly......... Thankyou very much cmorley.....

An additional question:

is posible to put two parallel output like a real tristate buffer?

float out 1 => tristate.0.in
float out 2 => tristate.1.in

tristate.0.out => float in 3
tristate.1.out => float in 3

is posible to make this (like a multiplexer)......... i intented to use the mux2 instruction but dont work!

Thanks again.-

Sebastian

What didn't work with the mux2 ?

I make following:

loadrt mux2 count=1
addf mux2.0 servo-thread

float out 1 => mux2.0.in0
float out 2 => mux2.0.in1

mux2.0.out => float in 3

setp mux2.0.sel FALSE

If i pt any value on float out 1 or float out 2......... the float in 3 value naver change!!!!

i do not know why?

strange it seems to work for me.....

hi cmorley...... you are correct......

i check again and again and finally found the problem ..... the instruction works perfectly and the problem is that I wrote "addf mux2 servo-thread" instead of "addf mux2.0 servo-thread"

thanks for yor help