nxa.ReadValue
- Reinhard Mayr (Unlicensed)
Owned by Reinhard Mayr (Unlicensed)
Description
This function issues a read operation of the specified item to the field device. An optional delay can be specified. The result is received asynchronously from the field and therefore not returned by this function. Only data points related to field level interfaces are supported.
Signature
nxa.ReadValue (string, number)
Parameters
| Name | Type | Mandatory/Optional | Description |
|---|---|---|---|
| string | M | itemID of the item that shall be read | |
| number | O | delay in milliseconds (optional) |