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• ETN tower light is a controllable LED tower light connected to the
application program in the PC using a PC and ETN(Ethernet) Interface.
• You can monitor or control the product from a remote location because
it is controllable by using a web browser or application on a PC.
•
Provides MS runtime libraries for developers(VC ++, VB,
Delphi(32bit),
c#(64bit)) to utilize on various applications of a PC, and a sample
program (VC++) is available for testing purpose.
• Supported OS(32bit 64bit) : Windows XP, Windows 7, Windows 10
• Supported Program : VC++, VB, Delphi(32bit only), C#(64bit only
• Communication speed : 10M/ half duplex method
Controllable LED tower light connected to the application program
in the PC using a PC and ETN(Ethernet) interface
1. What is Ethernet?
Ethernet is the most popular physical layer LAN technology in use today. It denes the number of conductors that are required for
a connection, the performance thresholds that can be expected, and provides the framework for data transmission. A standard
Ethernet network can transmit data at a rate up to 10 Megabits per second (10 Mbps). The Institute for Electrical and Electronic
Engineers developed an Ethernet standard known as IEEE Standard 802.3. This standard denes rules for conguring an Eth-
ernet network and also species how the elements in an Ethernet network interact with one another. By adhering to the IEEE
standard, network equipment and network protocols can communicate e󰀩ciently.
2. What is TCP/IP Protocol?
TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet. It can
also be used as a communications protocol in a private network (either an intranet or an extranet)
TCP/IP is a two-layer program. The higher layer, Transmission Control Protocol, manages the assembling of a message or le
into smaller packets that are transmitted over the Internet and received by a TCP layer that reassembles the packets into the
original message. The lower layer, Internet Protocol, handles the address part of each packet so that it gets to the right destina-
tion. Each gateway computer on the network checks this address to see where to forward the message. TCP/IP communication
is primarily point-to-point, meaning each communication is from one point (or host computer) in the network to another point or
host computer.
EtherNet Network
Technical Data of Ethernet LED Tower Light
※ The gure below shows the connection of the ETN tower light.
142 | www.qlight.com
4. What is MAC Address?
MAC address (Media Access Control) is a global unique identier assigned to network devices. In other words, you can use the
Mac Address IP address to nd a separate devices. It delivers Data Packet just like a postman delivers a letter.
So what would be the di󰀨erence between IP address and Mac address? Both IP address and MAC address are the address of
its destination. IP address is simply the address while Mac address is a social security number of people living in the house IP
address can be changed dynamically, but Mac address only has one unique address per device.
• Mac Address : an address for computers to communicate with each other, and there is no other PC that has a same Mac Addr as yours.
•
IP Address: needed routing when other computers are searching for your computer address, that is an address of your computer for others to search.
An IP address is assigned to every device on a network so that device can be located on the network. The internet is a network,
and Every device on an TCP/IP network must have a unique IP address. IP addresses are assigned, either automatically by
DHCP, or by manual conguration. That number is used by the network routing equipment so that when you ask for a page from
the site, that request is routed to the right server. MAC addresses are typically used only to direct packets in the device-to-device
portion of a network transaction. That means that your computer’s MAC address will be in network packets only until the next de-
vice in the chain. If you have a router, then your machine’s MAC address will go no further than that. Your router’s MAC address
will show up in packets sent further upstream, until that too is replaced by the MAC address of the next device.
5. What is PORT?
A port (noun) is a “logical connection place” and specically, using the Internet’s protocol and TCP/IP, the way a client‘s program
species a particular server program on a computer in a network. Higher-level applications that use TCP/IP such as the Web
protocol, Hypertext Transfer Protocol, have ports with preassigned numbers. These are known as “well-known ports” that have
been assigned by the Internet Assigned Numbers Authority (IANA). Other application processes are given port numbers dynami-
cally for each connection. When a service (server program) initially starts, it is said to be bound to its designated port number. As
any client’s program wants to use that server, it also must request to bind to the designated port number.
Port numbers are from 0 to 65535. Ports 0 to 1024 are reserved for use by certain privileged services. For the HTTP service, port
80 is dened as a default and it does not have to be specied in the Uniform Resource Locator.
GROUP 1
st
address 2
nd
address 3
rd
address 4
th
address
A CLASS 1-127 0.0.0-255.255.255
B CLASS 128.0-191.255 0.0-255.255
C CLASS 192.0.0-223.255.255 0-255
1
st
192 168 0 128
2
nd
3
rd
4
th
No. Description Command
1
st
1
st
address, Classes are A,B,C,D,E.
A CLASS : Large network
B CLASS : Large network
C CLASS : Small network(private IP)
D CLASS : Multi cast(use in designated group)
E CLASS : Stand by
A CLASS address : 1-127
B CLASS address : 128-191
C CLASS address : 192-223
D CLASS address : 224-239
E CLASS address : 240-255
2
nd
2
nd
address, Being Network ID or Host ID depending on 1
st
Address
3
rd
3
rd
address, Being Network ID or Host ID depending on 1
st
Address
4
th
4
th
address, Being Network ID or Host ID depending on 1
st
Address
3. IP Address format
The format of an IP address is a 32-bit numeric
address written as four numbers separated by
periods. Each number can be zero to 255. For
example, 203.172.12.7 could be an IP address.
An IP address is divided into network address
and computer address, and classied as Class
A, B, C, D, and E depending on the size of the
network or the number of host. Of these, only
Class A, B, C are given to a general user.
The IP address what we are about to test is
classied as C Class.
IP address assignment by class
Technical Data of Ethernet LED Tower Light