def status(self, value): self._status = bytes.loByte(value)
def tpci(self, value): self._frame[6] = bytes.loByte(value)
def service(self, value): self._service = bytes.loByte(value)
def ctrl(self, value): self._frame[0] = bytes.loByte(value)
def npci(self, value): self._frame[5] = bytes.loByte(value)