Using OSDP over RS-485

OSDP defines a method for secure communication between an Access Control Unit (ACU) and all its Peripheral Devices (PDs). The VTAP reader RS-485 interface can be used for OSDP communications between the VTAP (PD) and an ACU, in an access control system.

The command interfaces on a VTAP reader are designed as human interfaces. Using the secure OSDP protocol on interfaces provides an ideal machine interface, with the necessary CRCs and integrity checks.

A VTAP reader will support basic and secure modes on OSDP.

If you need further support, please contact vtap‑support@dotorigin.com.