Rockwell-automation DeviceLogix System User Manual Uživatelský manuál stáhnout pdf (Strana 193)

Publication RA-UM003B-EN-P - February 2010 193

RSNetWorx for DeviceNet Software and the DeviceLogix Editors Appendix B

Determine Network Status Override

The network status override parameter controls whether local logic

should control outputs when it detects a network error condition. You

determine if the network status override is enabled or disabled.

When the override is disabled (default), the device turns outputs off

under any of the events. If the override is enabled, the device ignores

any network fault. If DeviceLogix functionality is enabled, the control

of outputs is maintained even if there is a network fault.

The Network Status Override parameter is used to override normal

behavior during the following events.

Network Status Override Overview

Exemplary Network

Error Conditions for

DeviceNet

Behavior with Network Status

Override Parameter Disabled

Behavior with Network

Status Override Parameter

Enabled

Duplicate MAC ID

Failure

Module is put into an inoperable state

and all outputs remain off.

Local logic continues to update

output values.

Entering the bus off

state at power up

Module is put into an inoperable state

and all outputs remain off.

Local logic continues to update

output values.

Entering the bus off

state during run time

Module is put into an inoperable state

and all outputs assume a safe state.

Local logic continues to update

output values.

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Rockwell-automation DeviceLogix System User Manual Uživatelský manuál Strana 193