Communicating with Devices on an Ethernet Network

11-13

 

 

Using BOOTP to Configure Channel 2 for Controllers on Subnets

Configure the BOOTPTAB file according to the subnet mask and gateway address for each PLC-5E controller on the link. See the example below and the corresponding BOOTPTAB file on the next page.

IMPORTANT

Because BOOTP requests are seen only on the local subnet, each subnet needs its own BOOTP server and BOOTPTAB file.

personal computer WINDOWS

PLC-5/20E

or HP 9000 or VAX computer

processor

 

BOOTP

Subnet A

server

 

130.151.194.xxx

Ethernet TCP/IP network

Ethernet gateway or router"

Hostname: Iota1

IP address: 130.151.194.19

Subnet Mask: 255.255.255.0

Gateway Address: 130.151.194.1

130.151.194.1

BOOTP

 

 

130.151.132.1

server

 

 

130.151.138.1

BOOTP

server

 

130.151.132.xxx

130.151.138.xxx

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Subnet B

 

 

 

 

 

 

 

 

Subnet C

 

 

 

 

 

 

 

 

 

PLC-5/80E

 

 

PLC-5/20E

 

 

processor

 

 

processor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hostname:

Iota2

Hostname:

Iota3

IP address:

130.151.132.110

IP address:

130.151.138.123

Subnet Mask: 255.255.255.0

Subnet Mask: 255.255.255.0

Gateway

 

Gateway

 

Address: 130.151.132.1

Address: 130.151.138.1

Publication 1785-UM012D-EN-P - July 2005

Page 187
Image 187
Bradley Smoker PLC-5 Personal computer Windows, Or HP 9000 or VAX computer, Server 130.151.194.xxx Ethernet TCP/IP network