User's Manual

NETNode
Phase 1 and 2 Units
NETNode
User Manual
NETNode-V2.3
2-58
DS000034 Unclassified
4.8.1.2. UDP
UDP (User Datagram Protocol) is used to move data about the network. The packets are
sent out and the system does not expect a reply. There is no way that the sending device
can tell if the data arrived at the destination.
4.8.1.3. TCP Server
TCP (Transmission Control Protocol) is used to move data about the network. The packets
are sent out and the system will expect a reply. Each message is acknowledged by the
destination device.
4.8.1.4. TCP Client
This mode allows the NETNode data port to connect to another NETNode in server mode
using a robust TCP link.
4.8.2. Baud Rate
This is where you set the speed at which data will be transferred across the network. Speeds
available are: None, 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
Note: The data is assumed to be 8 bits.
4.8.3. Parity
A parity bit is a bit that is added to ensure that the number of bits with the value one in a
set of bits is even or odd. Parity bits are used as the simplest form of error detecting code.
There are two variants of parity bits: even parity bit and odd parity bit.
This combo box allows you to set: None, Even and Odd.
4.8.4. IP Port and IP Address
These set an IP address and Port to and from which the data will transferred.
The user can connect to the data port via telnet by setting the mode to TCP server and the
port number to 23.
The user can connect two data ports on different units together via setting UDP mode and
using the matching port numbers.
To send data between two nodes the data IP address of each node should point at the
other and the ports must match.
To send data between two nodes one node should be set to server, one to client, the IP
address of each node should point at the other and the ports must match.