User`s guide

18 DC 900-1339H
FMP Programmer’s Guide
To maintain high data throughput, Freeway uses a multi-processor architecture to sup-
port the LAN and WAN services. The LAN interface is managed by a single-board com-
puter, called the server processor. It uses the commercially available VxWorks operating
system to provide a full-featured base for the LAN interface and layered services needed
by Freeway.
Freeway can be configured with multiple WAN interface processor boards, each of
which is a Simpact ICP. Each ICP runs the communication protocol software using
Simpact’s real-time operating system.
Figure 1–1: Freeway Configuration
WAN
Interface
Processors
Freeway Server
ICP
ICP
Ethernet LAN
3413
WAN Protocol
Options
Defense
Financial
SCADA
Commercial
X.25
Bisync
HDLC . . .
Industry Standard Bus
Server
Processor
Client 1
Client 2
Client n
…
…
Application
1
DLI
Application
2
DLI
Application
n
DLI