Output (O ->T) Assembly Object (Class 0x04, Instance 0x65)
The EtherNet/IP Assembly Object Instance 0x65 defines the output data message that will be sent from the EtherNet/IP connection originator to the Ethernet Port via an I/O message. The output data is one 16-bit word (UINT) and is currently reserved for future use. It should be set to 0.