Description
This function issues a read operation of the specified item to the field device. An optional delay can also be specified. It is possible to delay this. The result is received asynchronously from the field and therefore not returned by this function.
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) |