def METHOD_NAME(self):
    """
    Descript. : Inits channels from xml configuration.
    """
    try:
        self.chan_mach_current = self.get_channel_object("MachCurrent")
        if self.chan_mach_current is not None:
            self.chan_mach_current.connect_signal(
                "update", self.mach_current_changed
            )
        self.chan_mach_status = self.get_channel_object("MachStatus")
        if self.chan_mach_status is not None:
            self.chan_mach_status.connect_signal("update", self.mach_status_changed)
        self.chan_topup_remaining = self.get_channel_object("TopUpRemaining")
        if self.chan_topup_remaining is not None:
            self.chan_topup_remaining.connect_signal(
                "update", self.topup_remaining_changed
            )
    except KeyError:
        logging.getLogger().warning("%s: cannot read machine info", self.name())