Using PLC strings as method parameters

To transfer a character string from PLC to C++ as a method parameter, use a pointer with length information when declaring the method in TMC:

Such a method can be called by means of implementing a method within the wrapper function block.

The reason is the different handling of method parameters in the two worlds:

• PLC: Uses the call by value for STRING(nn) data types.
• TwinCAT C++ (TMC): Uses the call by reference.