Resolve UDP Port Warning: Unable to Read Any Data

These remedies apply when you receive no data and you get this warning message:

'udpport' unable to read any data

Try these remedies to resolve the following causes when you use the UDP interface for:

Cause	Solution
An invalid command was sent to the destination UDP port, so there is a problem reading the response to the command.	Check the manual of the destination device for proper command formatting.
An incorrect write terminator was sent to the destination UDP port before attempting to read data, so there is no data to read.	Verify that the `Terminator` property is set to the value required by your destination UDP port. For more information about setting the property, see `configureTerminator`.
The destination UDP port did not receive the command because of an incorrect destination port value.	Verify that the UDP destination port value is set to the port number the device is listening on. For more information about setting the destination port, see `write` or `writeline`.
A firewall is blocking incoming UDP packets.	Verify that your system firewall setting allows connections to `LocalPort`.
The UDP packet size is larger than the maximum packet size that can be handled by the Ethernet adaptor.	The UDP packet size is controlled by the `OutputDatagramSize` property. You can specify the size, in bytes, between 1 and 65507, and the default value is 512.

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