Rockwell-automation 1771-ASB/E Remote I/O Adapter User Manual Manual de usuario descargar pdf (Pagina 31)

Chapter 3

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Addressing Modes for Your

Remote I/O

When you configure your remote I/O system, you must consider:

• how to address your I/O

• what combination of I/O modules and I/O chassis you can use

These topics are discussed in this chapter.

Programmable controllers that use the 1771-ASB remote I/O adapter

module can address their I/O in 2-slot, 1-slot or 1/2 slot I/O groups.

These three addressing methods are referred to as 2-slot addressing,

1-slot addressing and 1/2-slot addressing.

You select the addressing method with switch 5 and 6 in the I/O

chassis backplane switch assembly. You make this selection for each

chassis independently with only one method of addressing for each

chassis.

I/O groups are made up of I/O terminals (Figure 3.1). An I/O group

is an addressing unit that can contain up to 16 input terminals and 16

output terminals. You select an I/O chassis to have either 2-slot,

1-slot or 1/2-slot I/O groups.

Chapter Objectives

Hardware Addressing

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Rockwell-automation 1771-ASB/E Remote I/O Adapter User Manual Manual de usuario Pagina 31