Use this property to specify a scan time used by the server to update the Value property. This property is represented in milliseconds and can be modified after communication starts, and it is used only when the AllowRead property is set to True. When configuring this property in several application I/O Tags, users must increase the value of this property to those I/O Tags that do not vary very much in the device, enabling other I/O Tags with higher priority to be read more frequently, thus enhancing general application performance. Default value is 1,000 (1 second). The scan value must be greater than 0 (zero). The next script contains an example of using this property.

Sub Tag_OnStartRunning()
  Scan = 1500
End Sub