Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual

Page 8

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Publication 1785-UM012D-EN-P - July 2005

Table of Contents 4

Monitoring General Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Estimating DH+ Link Performance . . . . . . . . . . . . . . . . . . . . . . . . . 9-12

Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Size and Number of Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
Message Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Internal Processing Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Average DH+ Link Response Time Test Results . . . . . . . . . . . 9-16

Application Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17

Chapter 10

Communicating with Devices on a
Serial Link

Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
Choosing Between RS-232C, RS-422A, and RS-423 . . . . . . . . . . . . 10-1
Configuring the Controller

Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Using Channel 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

User Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
System Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Master Station to Remote Station Communication Methods . . 10-4
Polling Inactive Priority Stations. . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Changing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5

Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Configuring Channel 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Configure Channel 0 for DF1 Point-to-Point . . . . . . . . . . . . . . 10-6
Configure Channel 0 as a Slave Station . . . . . . . . . . . . . . . . . . . 10-9
Configure Channel 0 as a Master Station . . . . . . . . . . . . . . . . . 10-12
Configure Channel 0 for User Mode (ASCII Protocol). . . . . . 10-18
Configure Channel 0 for a Communication Mode Change. . . 10-21

Monitoring Channel 0 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

Using the System Mode Status Display . . . . . . . . . . . . . . . . . . 10-22
Using the User Mode (ASCII) Status Display . . . . . . . . . . . . . 10-24

Chapter 11

Communicating with Devices on
an Ethernet Network

Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Media and Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Assigning Your IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Network Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Configuring Channel 2 for Ethernet Communication . . . . . . . . . . . 11-2

Manually Configuring Channel 2 . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Using BOOTP to Enter Configuration Information. . . . . . . . . 11-5
Editing the BOOTPTAB Configuration File. . . . . . . . . . . . . . . 11-7

Using Advanced Ethernet Functions . . . . . . . . . . . . . . . . . . . . . . . . 11-9

Using Broadcast Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9
Using Subnet Masks and Gateways . . . . . . . . . . . . . . . . . . . . . 11-11
Manually Configuring Channel 2 for Controllers on Subnets . 11-12

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