Troubleshooting Method for Communication Failure of TCP/IP Network Access Control System

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First of all, it is very helpful to know the following questions to quickly investigate the fault:
Is the newly installed access control unable to communicate, or after a period of installation, suddenly unable to communicate? Has the customer's network administrator recently made relevant settings and restrictions on the network?
What tools do I need to bring?
Spare to replace the test access controller multimeter Laptop with network port A small HUB with four ports
Network type [Access control system communication failure investigation, requires technical personnel to have a certain network knowledge, or requires the customer's network management to cooperate. His principle is the same as that of a computer with a network card in a local area network. You can put the controller in a small local area network first or use the built-in small HUB to build a small network
Test to see if there is no problem with the controller itself, and then check the source of the fault. Please do not test the connection between the computer and the controller with a staggered cable, because this connection method is not supported. It is recommended that both the controller and the computer network card be connected to the HUB with a direct network cable for testing.

Chapter 1 Small local area network (same network segment, relatively simple network, under the same router)

The controller Rx (Link) light, if it is always on, indicates that the line is basically connected, if it is not on, it may be:

The network cable is broken, the terminal is not properly pressed and the cable is not pressed in place, it is virtual, the RJ45 network terminal is not plugged in the HUB or the controller end, the HUB has no power supply network cable sequence, it is not a direct network cable.

If the controller Rx (Link) light is always on, the wiring is generally OK. Continue with the following tests:

Open the access control management software, in the [Basic Settings] [Controller] interface, click [Search.net] Note: The [Search.net] tool can only be used in a small local area network, and does not support medium and large cross-network segment searches. If clicking [Search.net] the communication indicator of the controller does not respond, it proves that there is still a problem with the line. If the RxTx light is flashing, but the software search feedback interface does not display the information of the relevant controller, it may be that the computer is set with a firewall, or the firewall operating system has set restrictions on the network, please go to [Firewall] in [Control Panel] to put Open the corresponding restrictions (XP operating system default

After installation, the fire protection training is turned on, please turn it off), or notify the user's network administrator and ask him to release the corresponding network restrictions. If the controller can be found by searching, but cannot communicate with the [General Console], it may be that the SN serial number of the controller is entered incorrectly.

other reasons:
Whether the network card is good, whether the network cable is good. Whether the terminals are in good contact. It can be tested by computer instead of analogy.

Chapter 2 Large network (with cross-segment settings):
If it is a medium-to-large LAN that spans network segments, you cannot automatically communicate foolishly by selecting [Small LAN], and you need to select the [Medium-Large Network] option. And set the corresponding IP address, which is the same as setting up a computer. If you don't understand, you can ask the customer's network management for help.
The reasons for the failure to communicate may be: .
Whether the customer's network has hardware fire protection training has made corresponding restrictions. Check whether the network segment and IP settings are correct. Whether the same IP is set with other computer network cards or controllers, causing a conflict. The missing port used by our equipment is 60000. Whether the customer's network has restrictions on this port, please customer
The network administrator releases the restriction on this port, or tells an available port number. Set to this port number in our software. Note: It is set up in a small network, and then used in a large network. If there is a problem with the communication, you can take it to a small network to test whether the controller itself has a problem, or
The setting is incorrect.
Chapter 3 Access Control System via Internet
Note: Set up in a small network, and then put it on the Internet. If there is a problem with communication, you can take it to a small network to test whether the controller itself has problems, or the settings are wrong.
The reasons for the failure to communicate may be: .
Whether an available virtual domain name has been applied for, and whether the virtual domain name is filled in correctly. Whether the provider of the virtual domain name is at this time, whether his server is normal (maybe under maintenance, try again in a few hours), and whether the relevant settings of the router are correct. Are you using a router of the model we recommend?
(Other routers may support different functions, or have different setup methods. Our setup instructions are based on the models we recommend.)