Rockwell-automation 1734-ACNR POINT I/O ControlNet Adapter User Manual Manual de usuario descargar pdf (Pagina 21)

1 Publication 1734-UM008B-EN-P - August 2005

Chapter

Plan to Use Your Adapter

Chapter Objectives

This chapter explains how the adapter operates on a ControlNet

network and provides information to assist in configuring your

system. This chapter contains the following information.

• Overview of adapter operation

– I/O connections

– Rack connections

– Direct connections

– Explicit messaging communications

– Software requirements

• Understanding ControlNet I/O

– Scheduled data-transfer connections on a ControlNet network

Overview of

Adapter Operation

Connections are established between a scanner and an adapter to

exchange input and output data on the network. Status information is

transferred along with the I/O data.

I/O Connections

The adapter supports 25 direct and 5 rack I/O connections to the

POINT I/O modules. From a single 1734-ACNR adapter, multiple

controllers can establish I/O connections, up to a maximum of 5 rack

I/O connections per adapter. You must use direct connection with

analog and specialty I/O modules.

Make multiple rack connections to permit multiple controllers to

connect to I/O over a single 1734-ACNR adapter.

The number of connections that can actually be supported on a

network depends on the following.

• ControlNet parameters (NUT, RPI, API)

• POINT I/O configuration by itself (number and types of

modules)

• Type of connection to these modules (direct connection, rack

connection)

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 109 110

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Rockwell-automation 1734-ACNR POINT I/O ControlNet Adapter User Manual Manual de usuario Pagina 21