Welcome to our new forum
All users of the legacy CODESYS Forums, please create a new account at account.codesys.com. But make sure to use the same E-Mail address as in the old Forum. Then your posts will be matched.
Close
The user need to adjust a var Test (REAL)in 0.1 step in range 0..2 so I have added in a SpinControl in the visualization and I set that to a variable Test REAL, added in a interval of 0.1 and a limit of 0 and 2.
Thant works somehow fine ....but you would expect it step like 0.0, 0.1, 0.2, 0.3 etc to 2.0 in both directions, but what happens are
0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.700000048, 0.8000001, 0.9000001, 1.00000012 etc..
and if you spin negative then the value are getting even more off some kind of rounding error
So what does happens here it it a conversion to/from some other number base ?
Sure I can start to change it to integer and the do some math forth and back divide etc but is that really intended?
Any nice trick?
Codesys V3.5 SP12 Patch 6pbF
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Yeah, so just tried with integer in the SpinControl and interval of 1 the calc a real
Test3_Value:=(int_to_real(spin2_value)/10);
and put it in a textbox instead of the build in textbox in the the SpinControl
I does work but a bit odd in codesys ...
I tried the the spincontrol in C# just for a test with a interval of 0.1 and there it works as expected
Anyway I have another question:
In Webvisualition I need a symbol as a "Tank" of liquid and to show the level of the liquid
I do not see any "Tank" in the webvisui, are there a place to get more symbols than what's standard in codesys?
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
option 1
Build the element yourself using the readily provided primitives (99.9 percent of the time this will suffice!)
There is a readymade bargraph element, but you can design your own bargraph (tip: use a rectangle or so).
When designing it yourself you will learn new cool stuff about the visualisation as a bonus.
option 2
Try google?
option 3
obtain the "visu-toolkit" which is a professional CODESYS add-on which you have to pay for.
As far as I know it comes with a mandatory training at CODESYS or on site.
For further details on it you should contact sales (or search this forum as there are some topics on it)
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Aliazzz hat geschrieben:
option 1
Build the element yourself using the readily provided primitives (99.9 percent of the time this will suffice!)
There is a readymade bargraph element, but you can design your own bargraph (tip: use a rectangle or so).
When designing it yourself you will learn new cool stuff about the visualisation as a bonus.
I'm already doing that, but was wondering if there were some free open add-on somewhere or a description how to build your own eg if they are save in a xml style or so.
Since I work with Festo and they do have a HMI libray where you use studio designer where you have a lot of ready very nice symbols available, (whic for sure only work with Festo HMI scereens) and thereby are "Paid" it makes sense.
It might be the same if you could add in a library with symbols for web visu on certain models of PLC
Aliazzz hat geschrieben:
option 2
Try google?
Yeah I know Google.... but I really did not find what I had in mind
Aliazzz hat geschrieben:
option 3
obtain the "visu-toolkit" which is a professional CODESYS add-on which you have to pay for.
As far as I know it comes with a mandatory training at CODESYS or on site.
For further details on it you should contact sales (or search this forum as there are some topics on it)
That might be a route, need to loo into symbols and pricing
Thank You
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Wiljan hat geschrieben:
Hi
The user need to adjust a var Test (REAL)in 0.1 step in range 0..2 so I have added in a SpinControl in the visualization and I set that to a variable Test REAL, added in a interval of 0.1 and a limit of 0 and 2.
Thant works somehow fine ....but you would expect it step like 0.0, 0.1, 0.2, 0.3 etc to 2.0 in both directions, but what happens are
0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.700000048, 0.8000001, 0.9000001, 1.00000012 etc..
and if you spin negative then the value are getting even more off some kind of rounding error
So what does happens here it it a conversion to/from some other number base ?
Sure I can start to change it to integer and the do some math forth and back divide etc but is that really intended?
Any nice trick?
Codesys V3.5 SP12 Patch 6pbF
The reason this happens is because 0.1 cannot be exactly represented in a REAL which follows the IEEE-754 Floating point number convention.
Your 0.1 value is actually 0.100000001490116119384765625 inside the computer. After adding a few time, those extra bits start to show up in your summed number.
Hi
The user need to adjust a var Test (REAL)in 0.1 step in range 0..2 so I have added in a SpinControl in the visualization and I set that to a variable Test REAL, added in a interval of 0.1 and a limit of 0 and 2.
Thant works somehow fine ....but you would expect it step like 0.0, 0.1, 0.2, 0.3 etc to 2.0 in both directions, but what happens are
0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.700000048, 0.8000001, 0.9000001, 1.00000012 etc..
and if you spin negative then the value are getting even more off some kind of rounding error
So what does happens here it it a conversion to/from some other number base ?
Sure I can start to change it to integer and the do some math forth and back divide etc but is that really intended?
Any nice trick?
Codesys V3.5 SP12 Patch 6pbF
Use s long integer instead.
T:lint
Timeon: lreal
T:=t+10
Timeon:=to_lreal(t)/10.0
Sent from my Moto G (5S) Plus using Tapatalk
Yeah, so just tried with integer in the SpinControl and interval of 1 the calc a real
and put it in a textbox instead of the build in textbox in the the SpinControl
I does work but a bit odd in codesys ...
I tried the the spincontrol in C# just for a test with a interval of 0.1 and there it works as expected
Anyway I have another question:
In Webvisualition I need a symbol as a "Tank" of liquid and to show the level of the liquid
I do not see any "Tank" in the webvisui, are there a place to get more symbols than what's standard in codesys?
option 1
Build the element yourself using the readily provided primitives (99.9 percent of the time this will suffice!)
There is a readymade bargraph element, but you can design your own bargraph (tip: use a rectangle or so).
When designing it yourself you will learn new cool stuff about the visualisation as a bonus.
option 2
Try google?
option 3
obtain the "visu-toolkit" which is a professional CODESYS add-on which you have to pay for.
As far as I know it comes with a mandatory training at CODESYS or on site.
For further details on it you should contact sales (or search this forum as there are some topics on it)
I'm already doing that, but was wondering if there were some free open add-on somewhere or a description how to build your own eg if they are save in a xml style or so.
Since I work with Festo and they do have a HMI libray where you use studio designer where you have a lot of ready very nice symbols available, (whic for sure only work with Festo HMI scereens) and thereby are "Paid" it makes sense.
It might be the same if you could add in a library with symbols for web visu on certain models of PLC
Yeah I know Google.... but I really did not find what I had in mind
That might be a route, need to loo into symbols and pricing
Thank You
The reason this happens is because 0.1 cannot be exactly represented in a REAL which follows the IEEE-754 Floating point number convention.
Your 0.1 value is actually 0.100000001490116119384765625 inside the computer. After adding a few time, those extra bits start to show up in your summed number.
You can check out this site (and several others) to see how floats/REAL are stored in the computer.
https://www.h-schmidt.net/FloatConverter/IEEE754.html m