How does Wiegand communication work?
The Wiegand effect refers to the behavior of magnetic fields that comes from the specially designed wiring of the above-mentioned systems. This effect occurs when a Wiegand device is placed in contact with a Wiegand reader. It produces a nonlinear magnetic effect generated in this specially annealed wire.
What is Wiegand input and output?
What is Wiegand? Wiegand is the most common method of communication used by access control devices. The Door Interface Board (DIB) in the ICU allows for both wiegand input and output. Wiegand timing, number of bits, facility code length and wiegand format can vary greatly from access panel and reader manufacturers.
Is Wiegand a RS485?
Wiegand is a standard interface used in contactless card readers. Wiegand to RS485 bidirectional interface converter. Thus, standard contactless card readers can be easily connected to a PC or similar system wia RS485 interface.
Is Wiegand secure?
Wiegand swipe cards cannot be erased by magnetic fields and are more durable than other key cards because they do not contain microchips. This made them reliable, easy choices for equipping systems with swipe cards.
How do you test Wiegand output?
Procedure
- Check the pulse interval and width of the 3rd party controller.
- Set up the pulse width and pulse interval accordingly.
- Since the suprema device is sending the signal out to the controller, the Wiegand signal should be set to *Out*.
- Check that you have selected the correct Wiegand format and click apply.
What is Wiegand 26 bit?
The “26-bit” referred to the protocol of the data on the card. The data encoded using 26-bit format consists of 255 possible facility codes and within each there is a total of 65,535 unique card numbers. This is a relatively small number of unique cards, so additional authentication is often used.
What is the maximum distance for Wiegand reader cabling?
500 feet
The maximum cable length for a Wiegand reader to SIO reader port is 500 feet.
What is a RS 485 cable?
RS-485 is an industrial specification that defines the electrical interface and physical layer for point-to-point communication of electrical devices. The RS-485 standard allows for long cabling distances in electrically noisy environments and can support multiple devices on the same bus.
How far is Wiegand?
4) Readers with a Wiegand interface are limited to a 500′ (150m) maximum distance from the controller using #18 AWG (1.2mm) 6 or 7 conductor cable.