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Indicator light is the expression of the access control controller, you can see at a glance the joys and sorrows of the access control controller.

Understand the access control controller's indicator can always grasp the working status of the access control and communication status, like the controller's expression, in the debugging and maintenance can be very intuitive to see whether the access control controller is normal, and do not always have to run to the management computer to view, access control controller indicator light routine has the following kinds:

(1) power indicator, the logo is generally POWER, the light is on, indicating that the access control controller power supply is normal. In the domestic generally use red light, the international usually green light, red light is a fault light.

(2) The main chip working indicator, the logo is generally CPU, this light flashes, that the main chip is running normally, the clock circuit is working normally.

(3) card reading indicator, the logo is generally CARD, when the card is read, this light will be lit, indicating that the card information is read.

(4) Lock output indicator, the logo is generally LOCK, unlocking the light will be bright, indicating that the access controller has output unlocking signal.

(5) Communication indicator, the logo is generally RX/TX, light or blinking, indicating that the communication is working properly, if it is a TCP/IP controller, there is also a communication status display lamp on the network port, generally two lamps, one shows the receiving status, one shows the sending status.

(6) Alarm indicator, generally in the linkage expansion module, corresponding to the access to the alarm port, the light indicates that there is an alarm signal input.

Through these status lights, you can basically understand the working status of the access control, for example: read the card does not open the lock, we can first look at the corresponding lock light in the card reading is not bright, if the lock light is bright, but not open the lock, that means that the lock line is connected to the wrong one, or is the electric lock itself and the lock of the installation has a problem, we start from the access control controller's electric lock output down to find; if the card is read, the lock light is not bright! If you read the card, the lock light is not bright, then do not wrongly accused of human home appliances lock, from the access control controller settings and authorization and card reader and other aspects of the problem, and then look at the card when reading card card card light is flashing, if it does not flash, indicating that there are problems with the card reader or card reader line has a problem, if the light is bright when the card is read, then take a look at the access control controller settings it. Therefore, do not underestimate these lights, which is still a bit of learning, understand it, you are equivalent to open the eyes of heaven, able to see through the entire access control system's internal operation.