The LNL-2220 Intelligent Dual Reader Controller (IDRC) by Lenel
provides a single board solution for interfacing one or two doors
to an OnGuard® system. In addition, other I/O and reader interface
modules can be added on the LNL-2220’s downstream port to expand
its capabilities. The LNL-2220 revolutionizes access control system
architecture by allowing Ethernet connection directly from an entry
location to the OnGuard server, while still providing the security,
functionality, and modularity of Lenel’s proven hardware platform.
The LNL-2220 is scalable for any access control application, from the most
basic to the most sophisticated. In the event of communication loss, the
LNL-2220 allows nearly all local functionality to continue unimpaired until
the server connection is restored.
Utilizing its native Ethernet communications and an advanced 32-
bit processor, the LNL-2220 can communicate upstream to the host
computer through its Ethernet port (with a throughput up to eight times
greater than the fastest serial connections), or at up to 115.2 Kbps using
RS-232 communication directly or through an external dial-up modem.
The LNL-2220 can store up to 250,000 cardholders in non-volatile
flash memory, and supports selective download for larger cardholder
databases.
The downstream RS-485 two-wire port can be used to
connect up to 32 devices (maximum 64 doors).
Two on-board reader ports support Data1/Data0, Clock/Data, Bioscrypt
RS-485 readers and the bidirectional RS-485 Open Supervised Device
Protocol (OSDP) communications.
Each LNL-2220 supports up to eight different card formats. The LNL-2220 includes eight inputs that support
normally open, normally closed, supervised, and unsupervised circuits.
In addition, four output relays support fail-safe or fail-secure operation.