Rockwell-automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual Uživatelský manuál stáhnout pdf (Strana 64)

Publication 1794-UM061A-EN-P - July 2006

62 Configure Your Adapter and Digital Modules on a ControlNet Network

Direct connections for I/O modules

In this example, assume that each distributed I/O module is configured for a

direct connection to the controller.

The table below calculates the connections in this example.

ControlNet network

I/O

controller with ControlNet

communication module or

built-in communication port

ControlNet adapter with

digital I/O modules

ControlNet adapter with

analog I/O modules

ControlNet adapter with

digital I/O modules

System Connections: Amount:

Controller to local ControlNet communication module 0

Controller to ControlNet adapter

(1)

direct connection for digital I/O modules

direct connection for analog I/O modules

(1)

In this example, the remote ControlNet adapter uses the None communications format.

total connections used: 6

TIP

If you have a high number of modules, direct connections to

each module may not be feasible because the module supports

a finite number of connections and packets per second, and

direct connections may require more resources than the module

has available.

In this case, use rack-optimized connections to conserve

connection use and network traffic.

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Rockwell-automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual Uživatelský manuál Strana 64