The code is made in CodesysV2.3 but will also work in Codesys V3 (but in V3 a Union is shorter though) TYPEST_BYTE_TO_REAL:STRUCTB0:BYTE;B1:BYTE;B2:BYTE;B3:BYTE;REAL_OUT:POINTERTOREAL;END_STRUCTEND_TYPE The function fills the STRUCT and returns the correct decimal number from the ...
e后面跟的是10的指数(也就是1的10次方,e表示10次方) 1e1表示1×101,其实就是10。 1.0e-3 e后面跟的是10的指数(也就是1的10次方,e表示10次方) 1.0e-3表示1×10-3,其实就是0.001。 1.e-3 省略了小数点后面的0,它的值与1.0e-3表示的值相等。 再例如 5e2f 其中f表示浮点数表示5×102,也就是50...
or Client-to-PLC via TCP, the REAL_TO_STRING conversion fails. I'm quite sure the floater being entered is correct, and it's not merely a visual difference between the PLC and debugger. Even if I were to ignore the debugger entirely (removing n.1 and n.2), it still outputs...
Easy-to-Use Approach– Functions, such as Autodeclare, Autoformat and context-sensitive input assistance, greatly simplify the use of CoDeSys. All functions are accessible by use of the keyboard. What also ensures fast and efficient work is the exceptionally low number of resources CoDeSys requires...
i'm new in coding with codesys is there any help about how to convert array of 4 byte to real thank you for your support It depends. First you need to know more about the exact format. Is it a 32bit IEEE floating point number, which is just packed into an array of 4 bytes?
Think in bytes : WORD 2 bytes DWORD 4 bytes REAL 4 bytes LREAL 8 bytes REAL to 2 WORD or 4 BYTES: RealValue:REAL;WordArray:ARRAY[0..1]OFWORD; (* array of 2 words *)MEMCPY(ADR(WordArray[0]),ADR(RealValue),4); (* where 4 is number of bytes for REAL *) ...
hermsen-2021-08-17 Opened 2 times the same question, once in Engineering, once here ;-) The Engineering thread is also UNION solution. Log into post a comment.
forgot to mention am beginning in ST All the help is really more then welcom!!! Thanks in advance Yan Hi Yan, There's a standard function block in codesys library called LIN_TRAFO which is in REAL. Try that. resolution is only 12 bits not 16 however wago has a 15 bits version if ...