244 if upgrading a wiegand reader to osdp do you need to also change the wiring as well. 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.
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Osdp wiring diagram. It is possible to reuse existing wiegand wiring for osdp. When unsupervised reporting consists of only the open or closed states. Input circuits can be configured as unsupervised or supervised. This includes how to connect both a peripheral device pd or access control unit acu or both. Osdp is fl exible to support either homerun cable pulls or the daisy chain methodology depicted on the right. Wiegand vs osdp wiring diagram created date.
Osdp secure channel supports high end aes 128 encryption required in federal government applications. 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. Osdp supports bi directional communications among devices. 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. However using simple stranded cable typical of wiegand access control readers does not typically meet the tia485eia rs485 specification for twisted pair recommendations. Typically these inputs are used to monitor door position request to exit or alarm contacts.
Reader port 1 osdp protocol devices 2 wire rs 485 8. Additionally osdp constantly monitors wiring to protect against tampering removing the guesswork since the encryption and authentication are. Osdp constantly monitors wiring to protect against attack threats. If you work in access control no doubt you realize that wiegand became a de facto industry standard after it first. Osdp offers end users more options due to its interoperable nature. The wiring diagram above depicts how the wiegand protocol requires homerun cable pulls from the control panel to individual peripheral devices.
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. 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. Included in this technical bulletin are wiring diagrams and instructions on properly configuring hid osdp readers with an nsc 200 subcontroller. Osdp supports advance smartcard technology applications including pkificam and biometrics. What is the wiring diagram for osdp.
Gallery of Osdp Wiring Diagram
