Base component for an actuator with analog order, position feedback and/or two
 switches (switch open and switch closed).

 BaseActuatorA is for example used in the component BaseCValve.

 The scale of the Order, Position and Manual bars, are determined by
 the Order.PresMaxLimit and Order.PresMinLimit attributes.

 The mode, Auto, Manual or Local, is handled by the mode object. See class
 CompModeAM for more information.

 If the actuator has positional feedback, the ordered position is compared
 with the positional feedback, and if the difference exceeds the value specified
 in 'MaxPosDiff', an alarm is sent.

 If the actuator has limit switches, also the switches are supervised. If a
 positional feedback signal is present, the switches are matched against this
 signal, otherwise they are matched against the ordered position. If the
 position is below 'PosSwitchClosed' and the SwitchClosed signal is missing,
 an alarm is sent. If the position is over 'PosSwitchOpen' and the
 SwitchOpen signal is missing, an alarm is sent.
 If both switches are simultaneously activated, an alarm is also sent.

Configuration

 There are eight configuration alternatives, that specifies whether the actuator
 has limit switches and/or positional feedback.

 - TwoSwitches            Switch open and switch closed. No positional feedback.
 - SwitchOpen             Switch open and no positional feedback.
 - SwitchClosed           Switch closed and no positional feedback.
 - NoSwitches             No switches and no positional feedback.
 - PositionTwoSwitches    Positional feedback, switch open and switch closed.
 - PositionSwitchOpen     Positional feedback and switch open.
 - PositionSwitchClosed   Positional feedback and switch closed.
 - PositionNoSwitches     Positional feedback and no switches.

 Signals that should be connected to channel objects:

 - Order        Ao
 - Position     Ai (optional)
 - SwitchOpen   Di (optional)
 - SwitchClosed Di (optional)

 For plc coding the function object BaseActuatorAFo is used.

 Create a function object in the plc editor and connect it to the current
 object with the connect function.

• BaseActuatorAFo
• CompModeAM

 Super class.

 Enumeration for object graph configuration.
 Handled by the ConfigureComponent method.

 Analog output signal for the position order value.

 Analog input signal for the position feedback.

 Digital input switch open.

 Digital input switch closed.

 Mode object.

 Maximum difference between ordered and measured position.
 If the difference exceeds this value, an alarm is sent.

 Delay for position difference alarm in seconds.

 Alarm text for position difference alarm.

 Delay for switch alarm in seconds.

 Alarm text for switch alarm.

 Position for limitswitch open.
 If the position feedback (or ordered position, if feedback is
 not present) exceeds this value, and the switch open signal is
 missing, an switch alarm is sent.

 Position for limitswitch closed.
 If the position feedback (or ordered position, if feedback is
 not present) is below this value, and the switch closed signal is
 missing, an switch alarm is sent.

 Indication for error.

 Indication for warning.

 A switch error is detected.

 A position difference error is detected.

 Enumeration for valve position (open, closed or in between).

 Supervision is disabled.
 Shows the input DisableSup in the plc Fo object.

 The plc function object connected to this object.
 This attribute is set when the function object is connected from
 the plc editor by the connect function.

 The simulate plc function object connected to this object.
 This attribute is set when the simulate function object is connected from
 the plc editor by the connect function.