Returns the value for switch device id as a double.
ASCOM.DriverAccess (in ASCOM.DriverAccess.dll) Version: 188.8.131.52 (184.108.40.20674)
|InvalidOperationException||If the value cannot be read. This is not recommended but it is not always possible to read
the value from some hardware. Once the value has been set the last value set should be returned.|
|InvalidValueException||If id is outside the range 0 to MaxSwitch - 1|Remarks
This method was first introduced in Version 2.