The following words can be used open and close the ADS valves and to open the actuators (see part II). Security mechanisms have been foreseen for accessing the valves and actuators. For opening a valve or an actuator, first the corresponding control line has to be set in the Control Register. The output goes high after a low-to-high transition of the enable line. For closing a valve, the corresponding control line has to be cleared in the Control Register. The output goes low after a low-to-high transition of the enable line. This should prevent the valves/actuators to be activated or deactivated by accidental access to the Control Register. For the listing see part II.