TCP / IP application of DOS industrial control motherboard
Most of the models of embedded DOS industrial control motherboards provided by Intron provide Ethernet interfaces. These Ethernet network interfaces conform to the physical and electrical characteristics of the standard Ethernet network interface. Customers only need to use standard RJ45 connectors to lead it out and connect it to the Ethernet network that the customer wants to communicate with. In the tide of informatization development, in applications such as industrial automation, power equipment, communication management, smart terminals, smart cells, etc., due to its advantages of fast speed, good versatility, strong scalability, etc., Ethernet networks are becoming equipment. The main way of communication between. Intron DOS embedded network module not only provides the physical interface of the Ethernet network, but also provides supporting commercial-grade TCP / IP software protocol library and related routines. It is a cheap and good choice for users to develop embedded Ethernet network terminal equipment. . The TCP / IP protocol library provided by Intron for free is based on excellent commercial software source code, and after long-term comprehensive testing, its performance is stable and reliable, and it has high transmission indicators. The protocol library is generated by Borland C / C ++ programming, which can be easily linked into user applications, helping to quickly complete the development of various network application products. Intron's TCP / IP protocol library is aimed at the characteristics of embedded application development. It takes "connection" as the object and encapsulates a few application API functions, covering most applications of embedded network development. It has good usability and flexibility. Sex. The basic running space is less than 90K. Test hardware environment: Intron Embedded Network Module NetBox-II (48MHz 386EX CPU / 10M Ethernet interface) as the client, and CelerON 1GHz CPU PC (Windows98 / 10M Ethernet network interface) as the server. 10M star Ethernet network, category 5 twisted pair Compilation environment: Borland C ++ 3.1 (Huge Mode) Test Results: According to the TCP / IP standard, the minimum length of the IP datagram header is 20 bytes, the minimum length of the TCP segment header is 20 bytes, and the minimum length of the UDP user datagram header is 8 bytes. It can be seen that the maximum packet length of TCP is 1500-20-20 = 1460Bytes, and the maximum packet length of UDP is 1500-20-8 = 1472Bytes.
Wifi Antenna Description
Wi-Fi wireless networking works by sending radio transmissions on specific frequencies where listening devices can receive them. The necessary radio transmitters and receivers are built into Wi-Fi enabled equipment like routers, laptops, and phones. Antennas are key components of these radio communication systems, picking up incoming signals or radiating outgoing Wi-Fi signals. Some Wi-Fi antennas, particularly on routers, may be mounted externally, while others are embedded inside the device's hardware enclosure.
WIFI Antenna (2.4G Antenna) is one kind of wireless antennas.The main operating frequency of WLAN is 2.4Ghz and 5.8Ghz.
WiFi antenna(WLAN antenna)is installed on wireless devices like WLAN AP to reinforce signal strength.Wireless device will radiate signal in air at specified frequency 2.4Ghz or 5.8Ghz through WiFi antenna/WLAN antennas and allow other WLAN devices like NB or smartphone to get signal at same frequency range.
WLAN or WiFi is based on IEEE 802.11a,802.11b,802.11g,802.11n standards.WLAN or WiFi provides a connection through a WLAN AP,and this technology allows people can be connected to the networks within a coverage area.
WiFi Antenna specifications
Frequency range: 2400-2500Mhz
Connector : SMA
Picture Show
WIFI Antenna Wifi Antenna,LTE WiFi Antenna,Omni GSM Wifi Antenna,Gain Rubber WIFI Antenna Shenzhen Yetnorson Technology Co., Ltd. , http://www.yetnorson.com
Use Intron Embedded Network Module for TCP / IP Ethernet communication 
Intron Embedded TCP / IP Protocol Library 
The frame structure of Ethernet is shown in the following table: 
According to the frame structure of Ethernet, the maximum length of the data segment is 1500 bytes.
V.S.W.R : ≤1.5
Gain-dBi : 7
Polarization : Vertical
Impedance-Ω : 50
Max. Input Power-W : 50
