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Does anyone know how to convert an ascii string to the real value? I am taking a hex buffer (42,14,8F,5C) and converting to its ascii equivalent using oscat_basic.BUFFER_TO_STRING. I am now stuck on how to convert this value in its real value (37.140) to display on HMI. Thanks.
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If you are starting with IEE754 (a codesys REAL type) then you could use "SomeString := TO_STRING(UrRealVal);" Probably it would be better to put "UrRealVal" into a TextVariable field and a format (i.i. %2.3f) in the Text field of a viosualization element.
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Does anyone know how to convert an ascii string to the real value? I am taking a hex buffer (42,14,8F,5C) and converting to its ascii equivalent using oscat_basic.BUFFER_TO_STRING. I am now stuck on how to convert this value in its real value (37.140) to display on HMI. Thanks.
that's the bit pattern for an iee754 floating point number, not a string.
And it's 3.714 not 37.14
If you are starting with IEE754 (a codesys REAL type) then you could use "SomeString := TO_STRING(UrRealVal);" Probably it would be better to put "UrRealVal" into a TextVariable field and a format (i.i. %2.3f) in the Text field of a viosualization element.
a hint how formatted "printing" of reals in strings is possible:
https://forge.codesys.com/forge/talk/Engineering/thread/f05178ced3/?limit=25#904a