Properties
16 bit word Read-Write Starting address 0x40001 to 0x49999
The HoldingRegister item type has the following properties:
| Name | Description | ID | Flags |
|---|---|---|---|
| Offset | The linear transformation addend to use when calculating and item value. (Value = RawValue * Scale + Offset) | 5006 | 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 |
| Rawvalue | The raw, untranslated value of the item. | 10075 | Persisted |
| 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 |
| Scale | The linear transformation multiplier to use when calculating the item value. (Value = RawValue * Scale + Offset) | 5005 | Persisted |
| Slaveaddress | The slave address (Unit ID) of the Modbus slave (overrides the module property). | 10030 | Persisted |
| SrcItemID | The item ID in the source. This is the item ID this item uses to fetch data from the source. | 5030 | Persisted |
| 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 |
| Valuetype | Item canonical datatype in Modbus register. This determines what kind of data this field holds. For example: string, integer, etc. | 10045 | Persisted, Enumerated |
See also Predefined Item Properties and OPC DA Properties