https://forge.codesys.com/drv/io-drivers/doc/Generic/#datatypes
First example the IEC struct's type name is "DUT" but the type name in the DevDesc is "Channel4Byte"
Further the bytes names in the IEC struct are Byte0, Byte1, Byte2, Byte3, but in the DevDesc they are Byte1, Byte2, Byte3, Byte4
Do the names not matter?