Rockwell-automation 1771-ASB/E Remote I/O Adapter User Manual Bedienungsanleitung PDF herunterladen (Seite 11)

Chapter 1

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Introducing the Remote I/O

Adapter Module

This chapter describes the cat. no. 1771-ASB, series E remote I/O

adapter module:

module description and features

hardware components

The remote I/O adapter module serves as an interface between

remote I/O modules and programmable controllers. The remote I/O

adapter:

• transmits data up to 10,000 cable-feet (at 57.6K baud)

• provides faster backplane scanning and data transmission up 2500

cable-feet at 230.4K baud

• receives/sends data from/to the I/O scanner in serial form

• reads/writes data from/to the input modules in parallel form

• reads/writes data from/to the output modules in parallel form

• supports any mix of I/O (4, 6, 8, 16 or 32 points)

• supports three methods of I/O addressing; 1/2-slot, 1-slot and

2-slot

• checks I/O configuration on power-up to verify I/O module

placement

• scans all slots in the chassis, or all but the last four slots, allowing

improved scan time and I/O image space savings. Slot power

supplies can be used in the last quarter of the rack without using

I/O space.

• can emulate series B adapters, providing system response similar

to the 1771-ASB series B. This allows use of 1771-S4A and -S4B

scanners which require slower response for proper operation.

• has enhanced diagnostic indicators for easier troubleshooting.

Chapter Objectives

Module Description and

Features

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Rockwell-automation 1771-ASB/E Remote I/O Adapter User Manual Bedienungsanleitung Seite 11