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Document 52017 NION-MXL Instruction Manual Rev. A 10/10/02
Section 1: Description and Installation
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1.1 General Description
The NION-MXL interfaces to a Pyrotronics MXL control panel to provide monitoring and control of the FACP to a
UniNet 2000 network. The NION is based on the NION-232B motherboard hardware and communicates with
the FACP via the EIA-232 connection.
1.2 Description of the Serial NION-232B
The Serial NION-232B (Network Input Output Node) is an EIA-232 interface used with UniNet 2000. All of
the UniNet 2000 system components are based on LonWorks (Local Operating Network) technologies. The
Serial NION-232B provides transparent or interpreted communications between the workstation and control
panels. Unless otherwise noted, Acknowledge, Silence, and Reset are available for each interface. Check specific
connections for details.
The NION connects a LonWorks FT-10 or fiber network, and the EIA-232 port of control panels. It provides a
single, two-way communication channel for EIA-232 serial data when connected to a control panel. NIONs are
specific to the type of network to which they connect (FT-10 or fiber). The transceiver type must be specified and
ordered separately when ordering the NION. For information regarding network transceivers see the 51539
Network Installation manual section 1.1.3.
The NION can be powered by any power limited, filtered source with battery backup which is UL or ULC listed, as
appropriate for your area, for use with fire protective signaling units.
The NION mounts in an enclosure (NISCAB-1 or CHS-4L in CAB-3 series enclosure) with conduit knockouts.
Figure 1-1: NION-232B Board Layout
EIA 232
Connection
Outputs
Inputs
Option Board
Socket
Binding Pin
NION
Program
PROM
LEDs
(Unbound, Status, Net
Rec, Ser Rec, Ser Fail,
Input 1/2, Output 1/2)
Network
Transceiver
Connection
EIA-232
Configuration
Switch
Transceiver
Standoffs
+24 VDC
GND
Socket U5
NOTE: Use only wire
for power limited
systems. Power
limited wire runs use
type FPLR, FPLP, FPL or
equivalent cabling per
NEC 760.
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