could some one suggest how to use drpnt command for following need

1. job count (i hope we can store the part count in macro b variable) and send to pc
2. unused M code to run specific sub programs (where we can store the dprnt command like machine breakdown reason). so that we can use in MDI mode to run this M code to get detail on computer.
3. DETAIL on macro b variable storage and retrieve thro DPRNT.