The reason is a date format mismatch. Until this problem is solved, there is a workaround:
fileHeader companyName="STW" productName="RAMView" productVersion="V1.09r6" creationDateTime="2011-09-12T8:31:41 AM"
- open CodesysV2.3
- go to: Online/Communication Parameters
- select the communication channel to be edited
- double click the value of the field "Baudrate"
=> by double clicking the value, the baudrate value increments
NOTE: This field cannot be edited by typing in numbers! Only double clicking it will increment the baudrate value!
VAR_GLOBAL (* do NOT make constant; else CoDeSys might not create the ROM part *)
//'Lx_?z2.$01$1DDeviceName ProjectName Version $14AdditionalComment '; *)
END_VAR