PLC REAL values about pylogix HOT 5 CLOSED

Hi there, the value is exactly how is stored in the plc and how floating values are handled in general in programming/cpus. The plc software just shows you 1 or 2 points of precision.

Have a look at this tutorial, I would probably use round or f string under the second example.

https://www.geeksforgeeks.org/precision-handling-python/

from pylogix.

Here is a bit of an explanation on floating storage for 32bit cpu just as a general explanation why floating values have long precision. In short they're stored as binary numbers.

https://stackoverflow.com/questions/7644699/how-are-floating-point-numbers-stored-in-memory

Another from python docs.

https://docs.python.org/3/tutorial/floatingpoint.html

It’s important to realize that this is, in a real sense, an illusion: you’re simply rounding the display of the true machine value.

from pylogix.

Hi there, the value is exactly how is stored in the plc and how floating values are handled in general in programming/cpus. The plc software just shows you 1 or 2 points of precision.

Have a look at this tutorial, I would probably use round or f string under the second example.

https://www.geeksforgeeks.org/precision-handling-python/

Hi, Fernando. I thought this might be the case. Thank you for the tutorial - I'll have a look.

from pylogix.

Here is a bit of an explanation on floating storage for 32bit cpu just as a general explanation why floating values have long precision. In short they're stored as binary numbers.

https://stackoverflow.com/questions/7644699/how-are-floating-point-numbers-stored-in-memory

Another from python docs.

https://docs.python.org/3/tutorial/floatingpoint.html

It’s important to realize that this is, in a real sense, an illusion: you’re simply rounding the display of the true machine value.

Thank you again, Fernando. Agree with your observation - I've got no intention to round the floating values since they're as mentioned by yourself, the true value :)

from pylogix.

Here is a bit of an explanation on floating storage for 32bit cpu just as a general explanation why floating values have long precision. In short they're stored as binary numbers.
https://stackoverflow.com/questions/7644699/how-are-floating-point-numbers-stored-in-memory
Another from python docs.
https://docs.python.org/3/tutorial/floatingpoint.html

It’s important to realize that this is, in a real sense, an illusion: you’re simply rounding the display of the true machine value.

Thank you again, Fernando. Agree with your observation - I've got no intention to round the floating values since they're as mentioned by yourself, the true value :)

You're welcome. Glad to be able to help!

from pylogix.