I want communicate with S7-214 through pc/ppi cable in Labview5.0,but I do not know how to use free-interface protocal,and can I use the example of it to achieve it? I don't know if the input data of the Labview need to be transfered? if the data of plc is HEX,wether I should input one HEX value.or can I derirectly input DEC value throngh the emaple of the Labview5.0.please experts teach me! thanks a lot!