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EPAC300-M50 SERIES USER'S MANUAL
At this point, the IR port of the PDA does nothing. To enable it, configure it for
COM2 with the bit rate, data length, parity and stop bit matching EPAC Port 2.
3.4.6 Ethernet
The EPAC300-M50 includes a front panel RJ-45, 10 Base-T Ethernet connection for
high-speed data transmission at 10 Mega bits per second, enabling the EPAC300-
M50 to be connected to laptop computers, PDAs, Ethernet hubs and fiber optic
multiplexers. Each EPAC300-M50 is "Ethernet Ready" with IP and MAC addresses.
The supplied local area network communications software provides a small
footprint Internet protocol stack that enables the EPAC300-M50 to communicate
with other computer systems connected to a TCP/IP network. This enables
application software to send data, receive data, and log on to other computer
systems. The User Datagram Protocol (UDP), Transmission Control Protocol
(TCP), Internet Protocol (IP), as well as a raw socket interface are supported in this
package. Standard TCP/IP client/server applications such as inetd, telnet(d) and
ftp(d) are provided with this software along with network administration tools such
as ifconfig, netstat and ping.
The EPAC300-M50 Ethernet does not by
default define
actual
Internet
data
transmission
protocols.
These
must
be configured for each networking environment. Refer to application software
manual for installation and operation.
3.5 D Option Connector
The D Option consists of a 37-pin "D" connector that provides additional inputs
and outputs, plus anther connection to the internal FSK modem (M52 only).
3.6 Memory System
3.6.1 FLASH Memory Drive
The EPAC300-M50 series includes an internal FLASH memory drive, which is
similar to a hard disk drive, but with solid-state construction, and without moving
parts.
This drive is used in the EPAC-M50 series exactly like a computer hard
drive, meaning it contains a file structure to store software program and user data
files.
Traffic application control software and intersection data that has been
downloaded, resides in FLASH memory. Upon power-up, the traffic application
software is automatically loaded and run from dynamic random-access memory
(DRAM), like a personal computer. Note that more than one application program
can be stored in the FLASH memory and run concurrently, or one at a time. The
FLASH memory retains data without power, capacitor or battery backup. All traffic
application software and intersection data is stored in FLASH memory
permanently, until changed by use data entry or new download.
3.6.2 Dynamic Random Access Memory (DRAM)
AUGUST 2005
PAGE 13 OF 46
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