Using UDP Data Exchange

The UDP data exchange can be used to realize communication with AC31 Devices and is an optional module that can be added to the AC500 ETHERNET Communication Module.

Right-click on the Communication Module and select Add device to open the Add Device dialog where the UDP data exchange module is listed:

Double-click on UDP_data_exchange (UDP data exchange) to open the UDP data exchange Configuration in the editor window:

The following parameters are available:

Parameter	Default	Value	Meaning
Size of receive buffer	8192	1464…65535	Size of the receive buffer in [Bytes]. The behaviour in case of a full buffer can be determined with parameter Behaviour on receive buffer overflow.
Size of transmit buffer high prio	4096	0…65535	Size of the high priority transmit buffer in [Bytes].
Size of transmit buffer low prio	4096	0…65535	Size of the low priority transmit buffer in [Bytes].
Size of timeout buffer	2048	0…65535	Size of the timeout buffer in [Bytes].
Number of header data	10	0…1464	Number of bytes that are copied into the timeout buffer for timeout packages.
Receive broadcast	Disable	Disable	Reception of broadcast packages is disabled.
		Enable	Reception of broadcast packages is enabled.
Behaviour on receive buffer overflow	Overwrite	Overwrite	Incoming packages will overwrite the oldest packages in case of a full receive buffer.
		Reject	Incoming packages will be rejected in case of a full receive buffer.
UDP Port	0	0…65535	Port used for the UDP connection. See note below for further information.

Note

The following ports are reserved and will cause a configuration error if selected: 1200, 1201, 123, 80, 24576, 25383.

At this operating mode, the Function Blocks have no input for setting a port, so the port has to be identically at both sides. Otherwise, a communication is not possible.