Item type: Signal
A function, periodic in time
The Signal item type has the following properties:
| Name | Description | ID | Flags |
|---|---|---|---|
| Amplitude | This is the amplitude of the signal. | 10001 | Persisted |
| Bias | A constant value added to the signal. | 10005 | Persisted |
| Overridden quality | The actual quality the item value should have, used for simulating qualities. | 10100 | Persisted, Enumerated |
| Period | The time period between each repetition of the task. | 10004 | Persisted |
| Quality | Item quality - this tells you whether an item currently has a good or bad quality. It might be bad, for example, because it isn't connected or is set to the wrong type. | 3 | ReadOnly |
| Rights | Item access rights - this property may be "read", or "read write". This means that the property may only be read from, or also can be written to. For OPC items, this written value will be passed on to the external items this item comes from. | 5 | ReadOnly |
| Time | The date and time when this item was last updated. | 4 | ReadOnly |
| Type | The item canonical data type - the specific type of this item. Whether it's an integer, string, date, etc. | 1 | ReadOnly |
| Value | The current value of the item. | 2 | ReadOnly |
| Waveform | The waveform of the signal. | 10002 | Persisted, Enumerated |