Rockwell-automation 1747-ACNR15 ControlNet Adapter Module User Manual Instrukcja Użytkownika Pobierz pdf (Strona 26)

Publication 1747-UM003A-EN-P

3-6 Planning to Use Your ControlNet Adapter Module

Output Operation During Fault and Idle Modes

RSNetworx allows configuration to characterize each module connection

activity during certain operational states.

During idle mode and fault modes, outputs are configured for one of the

following operation states:

Understanding ControlNet

I/O

The ControlNet system is designed to:

• provide high-speed, repeatable, deterministic I/O transmission

• allow control and message information to co-exist on the same physical

media

• make sure that I/O data transfers are not affected by

– programming-terminal message activity

– inter-processor message activity on the network

Scheduled Data-Transfer Connections on a ControlNet Network

Scheduled data transfer on a ControlNet processor:

• is continuous

• is asynchronous to the ladder-logic program scan

• occurs at the actual rate displayed in the Actual Packet Interval field on the

RSNetWorx ControlNet I/O mapping (monitor) screen

NOTE

The electronic keying option offered by RSNetWorx for

rack connections applies to the 1747-ACN15 and

-ACNR15 modules only.

Missing or misplaced modules are not detected if the

module in question is configured within a rack connection.

Critical I/O modules that need to be detected when

missing or misplaced must be configured with individual

module connections.

Output Action

Reset outputs to off

Hold last state

Write Safe State data to outputs

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Rockwell-automation 1747-ACNR15 ControlNet Adapter Module User Manual Instrukcja Użytkownika Strona 26