1 Publication 1785-UM012D-EN-P - July 2005
Chapter
6
Communicating with Remote I/O
Using This Chapter
This chapter explains how to configure the controller to communicate with
remote I/O:
1. Select which channel to configure as a scanner.
2. Define the I/O status file.
Use a unique, unused integer file. You must define an I/O status file if
you want to autoconfigure your system.
3. Define a diagnostic file.
Use a unique, unused integer file.
4. Define the scan list.
For Information About Go to Page
Selecting devices that you can connect 6-2
Introduction to remote I/O 6-3
Designing a remote I/O link 6-4
Configuring a controller channel as a scanner 6-6
Communicating to a remote I/O node adapter 6-11
Transferring block data 6-13
Block-transfers of remote I/O data 6-15
Block-transfer sequence with status bits 6-17
Block-transfer programming considerations 6-19
Monitoring remote I/O scanner channels 6-21
Addressing the I/O status file 6-24
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