through LED lights, do not worry about jumping the wrong port. Bulk jump, that is, you can first down the task, and then physical jump, you can also first batch physical jump, and then through the software alarm platform to confirm, eliminate the alarm confirmation connection. In addition, the intelligent jumper itself also has a certain detection function, once the jumper is broken by external forces, while affecting the detection circuit, immediately generate alarms.650) this.width=650; "titl
1, the production of network cable, the first is to prepare materials, tools, etc., we need materials, tools have a suitable length of twisted pair, a number of RJ45 crystal Head, a twisted pair of wire crimping pliers, twisted pair tester;
2, twisted-pair connection method has two kinds: normal connection and cross connection, the normal connection uses is the international Eia/tia 568B Standard, but the cross connection uses is the inte
the workgroup switch and computer equipment network high-speed connection.
In the whole optical network, the backbone of the network generally uses quartz fiber network equipment to ensure the transmission distance. and between the Working Group and the workgroup, between the Working Group and the user, uses the plastic optical fiber equipment, realizes entire local area network uses the light to transmit the information.
1. Plastic Fiber Optic Department switch
This switch is a departmental
requires "authentication", the final performance test will not result in wiring errors or open-circuit short circuits. Because the installer can solve such problems at any time through F620. This can save a lot of time for fault diagnosis and locating.
Verify cable link Routing
Connect to fluke's "Cable identification" option in the complete LAN link. Installation engineers can use F620 to verify the link's routing and cable identification. In addition, the installer can detect two other wiring
T1 white and blue6 R2 orange7 T4 white Brown8 R4 BrownEIA/TIA 568B1 T2 white orange2 R2 orange3 T3 white-green4 R1 blue5 T1 white and blue6 R3 green7 T4 white Brown8 R4 Brown
We generally use EIA/TIA 568B, as long as the two ends of the twisted pair are arranged as follows.
1, 2, 3, 4, 5, 6, 7, 8White orange white green blue white blue green white Brown
Twisted Pair wires are essential components for connecting network equipment in Lan. They are composed of twisted pair wires and
standards. They are plug-and-play and support full duplex mode.
3. POF-RJ45 Optical Transceiver
POF-RJ45 optical transceiver is an Ethernet optical interface to RJ45 converter. It provides a POF fiber port and a twisted pair port with an RJ45 connection interface. It converts electrical signals from an Ethernet networ
least 12 36 lines should be twisted together, because they are a pair of differential drivers.Follow the EIA/TIA 568b standards to create connectors. According to the figure, the line pairs are arranged in a certain color order (1, white orange, 2, orange, 3, white green, 4, Blue, 5, white blue, 6, green, 7. White Brown, 8, brown ). Note that the Green Line must span the blue line. The easiest thing to make mistakes here is to put the white green line and the green line together, which will cau
Line sequence of RJ45 plug
568a Standard
Pin sequence media direct connection signal color
1 Tx + (transmission) white green
2 TX-(Transport) Green
3 RX + (receive) White orange
4. Do not use blue
5. Do not use white or blue
6 RX-(receive) Orange
7. Do not use white Brown
8. Do not use brown
568b StandardPin sequence media direct connection signal color1 Tx + (transmission white orange2 TX-(Transport) Orange3 RX + (receive) White-green4. Do not us
In the construction of a wireless network, wireless route connection settings are a key point. If the settings are incorrect, frequent faults may occur, and security is not guaranteed. Let's take a look at the wireless route connection settings. The specific operation steps have been summarized for everyone.
Wireless route connection setup Part 1: physical connection
1. connection between a wireless router and a superior device:
1. When the upper-level device is an ADSL digital cat, the output p
.
Network Center Area: consists of servers, exchange Hub Switch Hub), cabinets, smart UPS power supply can be used for several hours.
Trunk area: consists of five types of UTP/STP or optical cables connected from the network center to the HUB on each floor.Horizontal zone: consists of five types of UTP/STP connections between cabinets on each floor and each information outlet on this layer.Device zone: it consists of floor hubs, cabinets, distribution frames, and UPS power supplies.The cabling s
. POF-RJ45 Optical Transceiver
POF-RJ45 optical transceiver is an Ethernet optical interface to RJ45 converter. It provides a POF fiber port and a twisted pair port with an RJ45 connection interface. It converts electrical signals from an Ethernet network to optical signals transmitted on a POF plastic optical fiber, a
of ADSL Internet sharing cannot be achieved.
Under normal circumstances, the purchased ADSL Broadband modem will give a random network cable, which is usually a cross-network cable, that is, one end of the network cable is produced according to the 568B wiring standard, the other end of the network cable is produced according to the 568A wiring standard. However, when observing whether the network cable belongs to a crossover network cable, you only need to place the
used, then there is only one RJ45 connection connected to the link, if the use of an adapter-free cabling System test scenario, there will be more than one additional RJ45 connection in the link. As we all know, the RJ45 connection for the cable structure is to play a destructive role, RJ45 Crystal Head performance is
hole center metal makes 8 small holes into a decoration.It is not appropriate for the C26, c27, and c28 capacitors to share one pass hole. at most two devices share one pass hole., Beyond this limit, the capacitor will be ineffective.
============* Network electrical port *============An error occurred while handling the 10 m network electrical port. Because the cat5e twisted pair wires on site may be more than 100 meters long, which is a very large interference source,The
connected in t568b line order.When creating a network cable at ordinary times, if the network cable is not connected according to the standard, although sometimes the line can be connected, the interference between various lines within the line cannot be effectively eliminated, leading to an increase in the error rate of signal transmission, this affects the overall network performance. Only by building standards can we ensure the normal operation of the network and facilitate the maintenance w
instantaneous traffic, cumulative traffic and other traffic parameters, and then transmits the necessary data to the PLC through Modbus, after necessary processing by PLC, it is displayed on the PC for production and operation. The process is as follows:
Figure 1: Data Flow Direction of Traffic parameters
Debugging process I. WiringA-B company contrologix, its remote I/O rack has a communication template, called mcm (Modbus conmminication model), that is, Modbus communication template.
computer that is connected to the Internet) should be placed in the direction of the Internet phone line, because the shorter the telephone line the better.
Two. LAN Cabling
The first step is "Put the line", determine the network hub and the distance between each computer, intercept the corresponding length of the cable, and then the network cable pipe (PVC pipe). You can also walk directly along the wall without having to wear a tube. It should be noted that the length of the twisted pair
wxaui frame management usage: 1. general steps # Install wxpython2.8 .*. * Import wx. AUI # initialize a wxaui management framework object Mgr = wx. AUI. auimanager () # notify self as the parent object for managing all sub-objects # self can be any sub-object of wxwindow Mgr. setmanagedwindow (Self) # Place the control in the specified position (For details, refer to "2. layout step ") Mgr. addpa
To match different routes, there are also many types of network interfaces, such as the AUI port and SC port. LAN interfaces are mainly used to connect routers with lan, because the LAN type is also diverse, this determines that the LAN interface type of the router may also be diverse. Different networks have different LAN interface types. Common Ethernet interfaces include RJ-45, AUI and BNC interfaces, as
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