Exist way to send stdout from HDA processor process through main process for see output in console?

The stdout from the HDA Processor gets written to the job's log file which will be located in $PDG_TEMP. Since the HDA Processor job is running in a different process, there's no direct way of printing the stdout to your terminal/Houdini console. You could, in a downstream node, retrieve the log (using @pdg_log), read in the file, and print it to the console.