User`s manual

NPort S8000 Series Choosing the Serial Operation Mode
4-4
UDP Mode
Compared to TCP communication, UDP is faster and
more efficient. In UDP mode, you can multicast data
from the serial device to multiple host computers,
and the serial device can also receive data from
multiple host computers, making this mode ideal for
message display applications.
Disabled Mode
When the Operation Mode for a particular port is set to Disabled, that port will be disabled.