title: Read values through TwinCAT ADS without PLC variable declaration
body: <p>I'm new to EtherCAT/TwinCAT. I have a slave device connected to Master. I can read data with an ADS Client  from the slave device if I create a variable in my PLC and link that variable to a value on the slave. Is there a way to get a value from the slave without having to create a PLC variable? I'd like to be able to read and modify multiple objects on the slave without having to create a variable for each in the PLC.</p>