First. Regular tools

1, multimeter use: measure whether the voltage is normal, whether the line is short circuit and open.

2, prepare a set of really available standby equipment:

3, 485 and TCP communication mode controller each set

4, ID and IC card reader each

5, ID card IC card several pieces

6, electric plug lock a

7, 485 converter

8, standard power supply (12V 5A above) one use: replace the test

9, small flat-head screwdriver use: remove the wire of the terminal, too large is not convenient to remove.

10, strong Phillips screwdriver use: remove the controller board chassis power supply and so on.

11, laptop: requires a serial port or USB serial port converter, with a network port. Purpose: Comparison and exclusion test, to eliminate the fault of the customer computer itself or the problem of the operating system.

12, network HUB hub: (two or three straight crystal head networking lines) Build a small LAN environment to test whether there is a communication problem with the TCP controller.

13, test pen: computer and controller chassis whether there is leakage. Position of the AC live wire.

14, 120 ohms terminal resistance: some special occasions to improve the anti-interference ability of 485 lines. Just a few. Not very often.

15, walkie-talkie: some different floors, need two people to observe the fault and communication. Not necessary, you can use a mobile phone instead.

Second.Commonly used detection methods

Software test method:

[detection] method:

First start the management software, enter the [general console] select the faulty door. Then click [Detect], the software operation information will indicate the relevant faults, then you can handle according to the relevant faults. For example, the software has set some advanced Settings. For example, the multi-card door is set up without the user knowing, resulting in the failure to swipe the card to open the door

[real-time monitoring] method: [Total console] select the door for [real-time monitoring] real-time monitoring of the corresponding card indicator light to facilitate the detection of the fault that the card does not open the door. Corresponding communication indicators help locate communication faults.

[Search.net]Method: [Controller] in[Basic Settings]

Check to help find the communication fault of TCP/IP controller

Indicator light judging method:

CPU indicator:

When the CPU indicator is normal, it blinks. If it is on or not on, it is possible that the power supply is wrong, or the controller chip has been damaged and crashed.

CARD indicator:

As long as any of the controller's card readers swipes the card and the card number is transmitted, the indicator will flash. If the indicator light does not respond after swiping the card, it may be that the line from the card reader to the controller is broken, or the data line is connected incorrectly.

The output format of the card reader is incorrect.

The card reader is broken.

The controller's card reader input is burned.

ERR fault indicator:

Normally, it is off. If it blinks or is steady on, the controller chip may be burned, and the memory needs to be formatted improperly. Or other failures, please communicate with the manufacturer's technical personnel and contact. Communication indicator:

485 Controller:

Rx indicator indicates that the controller receives signals (including normal signals and interference signals)

Tx indicator indicates that the controller sends signals.

TCP controller: The Rx (Link) indicator is steady on, indicating that cables are generally normal. (There may also be some special problems that have not been detected and can only be said to be basically normal.)

  Tx Blinking indicates that the communication is ongoing.

Replacement method:

Equipment replacement method:

Replace the suspected faulty equipment with the sure good equipment (usually tested, often used equipment) to see whether the fault phenomenon disappears.

If it disappears, it's possible the device is broken. However, it is not entirely certain, because if the fault is caused by a certain environment or factor, it may not be shown immediately, or it will also hurt the new equipment over a period of time.

If you replace the suspected faulty equipment, there is no problem with the separate detection, which may be a problem in the wiring and other environments, you should actively continue to find the source of the fault, do not change it and think that everything is OK.

Laptop replacement method:

You can determine whether there is a problem with the customer's computer or operating system, or the wrong Settings.

Exclusion comparison method: 

If there are multiple devices, and only one device has a problem, if it is not the device problem, there must be some external difference that causes this particularity.

If there are multiple devices with the same problem, it is unlikely that all the devices are broken, there must be a common factor causing all the devices to have the same fault characteristics, then finding this common point is the key to finding the source of the fault.

If you suspect that there is a problem with a device, first evacuate all his external equipment to see if there is still a problem, if there is no problem, it must be the external equipment caused the failure, and then load each external device one by one, and load a test to see what is loaded to cause the failure.

If all external equipment is removed and there is a problem, it may be related to the equipment itself or its own factors, such as power supply.

If there is a system with multiple devices, and you are worried about the cause of the failure caused by mutual influence, consider using dichotomy to evacuate all devices, which helps speed up the speed of finding the fault. For example, if a system has eight controllers, consider disconnecting the last four controllers first, and then disconnecting two of the remaining four controllers.

Note

If the external non-electric lock of other equipment (such as: three-turn gate gate electric bell elevator automatic door, etc.), please communicate with our technical personnel first precautions, it is best to provide a detailed manual of the external equipment. So that we can give you professional advice.