Configures an analog output channel independent of the
 type of physical Ao-card.

 Figure below shows the step in Ao-signal conversion. ActualValue
 SigValue and RawValue belong to the Ao object. The card polynomial
 is defined in a card object, the Emerg attributes in a $Node object,
 and the rest in the ChanAo object

 Attributes Used in Ao-signal Conversion

 If EmergBreakTrue = TRUE and EmergBreakSelect = 2 then
 the output is based on FixedOutValue. Otherwise TestOn
 will settles which attribute the output is based on.

 For linear conversion, the conversion from engineering value to raw value can
 be specified by four ranges

- raw value range            RawValRangeLow - RawValRangeHigh
- channel signal value range ChannelSigValRangeLow - ChannelSigValRangeHigh
- sensor signal value range  SensorSigValRangeLow - SensorSigValRangeHigh
- actual value range         ActValRangeLow - ActValRangeHigh

 ChanAo objects are configured below a suitable card
 object.

 Rack and card objects to different I/O systems are
 documented separately.
 To create card object with channel objects belonging to
 it the function 'Configure Card' in "Utility Window" is
 recommended.

 Optional text, for example to describe the channel or
 its employment.

 Name of a signal object, i.e. Ao object, connected with
 the channel object.

 The identity of the channel. Optional, for example Ao0
 to denote the first channel, physical cable marking,
 etc.

 The Number attribute is used to associate the ChanAo
 object to a fixed channel on the card named by
 SigChanCon. The physical channels of the card are
 numbered in the interval {0,1, ... , (MaxNoOfChannels-1)}
 ,where MaxNoOfChannels is an attribute in the card
 object.

 The channels of the card are numbered according to the
 instructions of the card manufacturer.

 Specifies if the output signal will be based on the
 ActualValue or the TestValue; see figure 3-4. FALSE
 means that ActualValue is used; TRUE means TestValue.

 The output signal is based on the TestValue instead of
 ActualValue when TestOn is TRUE.

 Action value. The output signal is equal to
 FixedOutValue when EmergBreakTrue is TRUE and
 EmergBreakSelect = 2. The EmergBreak-attributes belong
 to the $Node object.

 Specifies in which way the engineering value will be
 converted to SigValue. The possible types of
 conversions are:

    -- 0   No conversion: SigValue = ActualValue
    -- 1   Normal conversion according to the output signal polynomial:
       SigValue = OutPolyCoef0 + OutPolyCoef1 * ActualValue

 The attribute ActualValue belongs to an Ai object.

 The constant term in a OutPolyType expression, see
 above.

 Coefficient in an OutPolyType expression, see above.

 The Low and High values of ActValRange specifies the
 range of the ActualValue of the signal. These values are
 correlated to the SensorSigValRange.

 The Low and High values of SensorSigValRange specifies the
 part of the ChannelSigValRange that is used by the sensor.
 For example, the channel can have a signal range of -20 - 20 mA
 but the sensor only utilizes 4 - 20 mA.

 The Low and High values of ChannelSigValRange specifies the
 signal range of the channel.

 The Low and High values of RawValRange specifies the
 raw value range of the channel.

 Specifies the data representation of the raw value.

 Raw value type, absolute or delta value.