The Device Server Signal Interface
The properties of a signal object are:
Property | Description |
---|---|
Name | The full signal name. |
Label | A label for the signal value, which can be used in applications. |
Unit | The unit of the signal value. |
Format | The format in which the data should be displayed (printf() format). |
Description | A text describing the signal. |
Max | A maximum value. Can be used for data display or to check limits of set values. |
Min | A minimum value. Can be used for data display or to check limits of set values. |
AlHigh | Above this limit an alarm will be indicated. |
AlLow | Under this limit an alarm will be indicated. |
Delta | If the nominal value and the read value of the signal differ by +/- delta during the number of seconds specified by "Delta_t" , an alarm will be raised. |
Delta_t | If the nominal value differs from the read value for a longer time than Dta_t seconds, an alarm will be raised. |
Standard Unit | A multiplier factor to convert the given signal unit into a standard unit (V, A, W, bar ...). |
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