Figure 3: Timeline For Successful Mrp Ring Repair At 16Ms I/O Update Rate - GE PACSystems RX3i User Manual

Cep profinet scanner

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Chapter 1. Overview

Figure 3: Timeline for Successful MRP Ring Repair at 16ms I/O Update Rate

MRP Operation at I/O Update Rates less than 16ms

The RX3i CEP Carrier implementation of MRP supports LinkUp/LinkDown detection, an optional part of the

MRP standard. This allows an MRC experiencing a network link failure or recovery to send LinkUp/LinkDown

messages to the MRM immediately. The MRM can heal the network without needing to wait for multiple test-

packet timeouts to detect the failure. This feature allows the network recovery time to be significantly

shorter than the test packet timeout interval because the break is detected immediately.

Minimum I/O Rate when Configured in an MRP Ring

The minimum I/O rate that is possible for bumpless operation depends on the speed and the type of physical

connection being used for the MRP ring ports. The RX3i PROFINET IO Controller supports a specified number of

GE Automation & Controls PROFINET I/O devices running at or above the minimum I/O Update Rate listed in

the following table.

For RX3i PNC operating specifications, refer to the PACSystems RX3i & RSTi-EP PROFINET I/O Controller

Manual, GFK-2571.

For operating specifications of the embedded PNC function of the RXi Controller, refer to the PACSystems RXi

ICRXICTL000 Distributed I/O Controller User's Manual, GFK-2816.

Minimum I/O Rates for Bumpless RX3i CEP Recovery

RX3i CEP Catalog Number

Minimum I/O Update Rate

100 Mb/s

Number of Devices

IC695CEP001

1ms

PACSystems* RX3i CEP PROFINET Scanner

GFK-2883E

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