Overview Of The Lnl-2000; Interfaces - Lenel OnGuard Hardware Installation Manual

18

Overview of the LNL-2000

This installation guide is intended for use by technicians who will be installing and maintaining the
LNL-2000 Intelligent System Controller (ISC).
The LNL-2000 provides the real time processing for the I/O interfaces connected to it. It holds the database
for the subsystem configuration and cardholders, the event log buffer in battery-backed memory.
18.1

Interfaces

The ISC interfaces upstream with the Access Control software on a host system and downstream with the
following Lenel field hardware components.
32 Downstream
Devices Total
RS-485
Multi-drop
2 or 4 wire
Single Reader
Interface Module
Up to 32 Single
Reader
0 1
2 3
Interface Modules
4 5
6 7
(32 Readers)
8 9
*
#
LNL-2000 Communications Overview
Access
Control
System
Intelligent System
Controller
Dual Reader
Interface Module
Up to 32 Dual
0 1
Reader
2 3
0 1
4 5
2 3
Interface Modules
6 7
4 5
8 9
6 7
(64 Readers)
*
#
8 9
*
#
Hardware Installation Guide
Dual Path
Communications
from Host to Controller
RS-232,
RS-485, Ethernet, Dial-Up,
Token Ring, etc...
Downstream Communications
 Four 2-wire ports
Two 4-wire ports

Combination 2 and 4 wire ports

Input/Output
Control
Module(s)
Up to 16 Output Control Modules
Up to 16 Alarm Input Control Modules
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