I'm just starting to use a model 224 Temperature Monitor and I succeeded in communicating with it with both IEE488 and ethernet, issuing simple commands. The command KRDG? with input query like A or B returns the correct output values. Unfortunately the input query 0 (KRDG? 0) returns the value of only one input and not the values from all inputs, as reported on page 100 of the manual. Should I change something on the instrument setup. Commands with longer output, like *IDN? just work fine.