Technical Specifications

Types of LAN IEEE:

Token Ring (802.5)

Port – RS23

Connector – 9 pin D type (M)

Cable – 3 core with (4+1) 9 pin D (F) connectors arranged in Ring (1.5m)

Mode – Physical ring, logical ring, Full duplex, Token passing

PC Software – Network Monitor

Node Software – Embedded program written in C illustrating particular Ring/Bus topology & token of 32 byte.

Network Interface card – Built in RS232 9 pin D (M) connector

Functionality – Select slave no. & transmit one of the 2 msg. (msg 1&2) and selected no. and make it on/off (only 2 leds)

Token Bus (802.4)

Port – RS485

Connector – 4 pin relimate bus

Cable – Twisted 2 core arranged in bus (1.5m) with RS232 to RS485 converter for Pc connectivity.

Mode – Physical bus, logical ring, Half duplex, Sliding, Token passing

PC Software – Network Monitor

Node Software – Embedded program written in C.

Network Interface card – RS485 piggyback module with 2 pin bus connector.

Functionality – LED control Key readings

Modbus

Port – RS485

Connector – 4 pin relimate bus

Cable – Twisted 2 core arranged in bus (1.5m) with RS232 to RS485 converter for Pc connectivity.

Mode – Master- Slave half duplex, Stop & Wait

PC Software – Network Monitor

Node Software – Embedded program written in C.

Network Interface card – RS485 piggyback module with 2 pin bus connector.

Functionality – LED control Key readings

CSMA / CD (802.3)

Port – Ethernet

Connector – RJ45

Cable – 5 port LAN switch with 5 straight CAT5 UTP cable+ 1 cross cable (half length) 2 meter each..

PC Software – Sniff duplex, Stop & wait.

Node Software – TCP/IP stack for Ethernet port and RS232 based command monitor.

Network Interface card – Ethernet piggybag module with RJ45 connector..

Functionality – Display of web page including IP & MAC address, Text message simultaneously command line control over RS232 select specific IP/MAC for a node etc.

Common features:

PC Hardware – Any lab PC with (P4/XP), CDROM, COM Port and one Ethernet port needed (PC is not in scope of supply).

Node Hardware – a) Embedded Controller device: 89C668 operating @ 16MHz. And On chip RAM:8KB data RAM, Flash /EEPROM: 8KB (64KB.) b) Serial port (RS232C) 9 pin D (M). c) Display (option): 16X2 LCD(Backlit) or 20X4 LCD(backlit)
d) General Purpose bicolor (green, red) 8X2 LEDs & 8 Push button switches /DIP switches. e) 12C serial EPROM (512KB), SPI serial EPROM (1KB), f) Power (SMPS): 5V/2.5Amp SMPS with RCA plug. SMPS. AC I/P230Vac+/-10% / 50Hz x 4 Nos.

No. of nodes – 4 nodes + PC as monitoring station (PC is not in scope of supply)

Experiment topics / software:

– Ethernet experiment covers protocols like ARP, UDP, TCP/IP, ICMP (PING), HTTP (web page), talnet using Hyperterminal winsock, FTP, SMTP
– DNS (domain name system), IP aliasing, error generation under ICMP & ARP
– Setting of IP no.
– CSMA / CD, CSMA, Token Bus, Token Ring.

Mechanical – Flat panel 4 x 2 rack with 4 client nodes mounted, RS232 multiplexer panel (1 of 4 nodes) to connect PC (Server mode) comport.