Overview Of The Lnl-3300; Interfaces; The Isc Board - Lenel OnGuard Hardware Installation Manual

32

Overview of the LNL-3300

This installation guide is intended for use by technicians who will be installing and maintaining the
Intelligent System Controller.
The LNL-3300 provides the real time processing for the I/O interfaces connected to it. The database for the
subsystem configuration and card holders are stored in flash memory. The event log buffer is stored in
battery-backed memory. Configuration data and event/status reports are communicated to the host via
onboard 10BaseT/100BaseTX Ethernet port or port 1.
32.1

Interfaces

The ISC interfaces upstream with the access control software on a host system. This communication occurs
through an onboard 10BaseT/100BaseTX Ethernet port or port 1. Port 1 may be set up as RS-232, 2-wire
RS-485 or an optional 10BaseT/100BaseTX using a Lantronix CoBox-Micro interface daughter board. Dual
path communication from the host to the controller may be set up via RS-232, RS-485, Ethernet, dial-up,
etc.
Downstream devices are connected via ports 2 and 3 using 2-wire RS-485.
32.2

The ISC Board

The ISC board contains the following components: two (2) unsupervised alarm inputs, one (1) host Ethernet
interface, one (1) RS-232 or RS-485 interface, two (2) RS-485 interfaces (2-wire), one (1) power-in input,
four (4) DIP switches, and sixteen (16) jumpers. It also contains a set of six (6) status LEDs and one (1)
memory backup (3 volt lithium) battery.
Hardware Installation Guide
171
revision 7 —