code: def _printCtrlConf(self):
          
          if self.ctrlinfo:
              print("Control configs:")
              for k, v in sorted(self.ctrlinfo.items(), reverse=True):
                  pv = v['pv']
                  rval = epics.caget(pv)
                  if rval is None:
                      val = ''
                  else:
                      val = self.unitTrans(rval, direction='+')
                  print("  {k:6s} = {pv:6s}, raw: {rval:>6s}, real: {val:>6s}".format(k=str(k),
                                                                                      pv=str(pv),
                                                                                      rval=str(rval),
                                                                                      val=str(val)))
docs: get PV value and print out