In addition osdps multi drop capabilities means one length of 2 conductor cable can accommodate many readers eliminating the need to run wire for each reader. If youre interested in having a more in depth look at how it works take a look at this osdp protocol example diagram which gives an insight into how to use it with existing wiegand devices.
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Osdp wiring diagram. Wiegand vs osdp wiring diagram created date. Additionally osdp constantly monitors wiring to protect against tampering removing the guesswork since the encryption and authentication are. It is possible to reuse existing wiegand wiring for osdp. If you work in access control no doubt you realize that wiegand became a de facto industry standard after it first. Implementing osdp standards can result in higher levels of security as osdp with secure channel protocol scp supports aes 128 encryption that is required in us. This includes how to connect both a peripheral device pd or access control unit acu or both.
What is the wiring diagram for osdp. Osdp supports bi directional communications among devices. Included in this technical bulletin are wiring diagrams and instructions on properly configuring hid osdp readers with an nsc 200 subcontroller. Its possible to reuse existing wiegand wiring for osdp however using simple stranded cable typical of wiegand access control readers is usually not meeting the rs485 twisted pair recommendations. When unsupervised reporting consists of only the open or closed states. Osdp is fl exible to support either homerun cable pulls or the daisy chain methodology depicted on the right.
The nsc 200 is a series 3 subcontroller that can have up to 4 doors 2 in and 2 outs connected to subcontroller via rs. Input circuits can be configured as unsupervised or supervised. However using simple stranded cable typical of wiegand access control readers does not typically meet the tia485eia rs485 specification for twisted pair recommendations. Osdp supports advance smartcard technology applications including pkificam and biometrics. Typically these inputs are used to monitor door position request to exit or alarm contacts. Osdp secure channel supports high end aes 128 encryption required in federal government applications.
Reader port 1 osdp protocol devices 2 wire rs 485 8. Osdp offers end users more options due to its interoperable nature. 244 if upgrading a wiegand reader to osdp do you need to also change the wiring as well. Osdp constantly monitors wiring to protect against attack threats. The wiring diagram above depicts how the wiegand protocol requires homerun cable pulls from the control panel to individual peripheral devices.
Gallery of Osdp Wiring Diagram
