What happens?
When loading a trace ( 'Trace'>'Load trace' menu command), the following error message appears:
The file 'xxx.trace.csv' is not a valid trace file. (Error around line yyy: Invalid type class)
When does this behaviour occur?
If a trace has been saved in csv format ('*.trace.csv file (only data)') and the trace contains a BIT variable, an error message appears when loading the trace by means of the PLC Designer. The saved trace recording is not opened.
Which products are affected?
PLC Designer V3.18 and higher
Short-term measures:
Save trace recordings as 'trace files (*.trace)'.
Evaluation/recommendations:
Trace recordings previously saved in csv format and containing BIT variables cannot be opened by means of the PLC Designer. The BIT data type can only be used in structures or function blocks. The BOOL data type is not affected by this function restriction.
