Rockwell-automation Ethernet Design Considerations Reference Manual Uživatelský manuál stáhnout pdf (Strana 93)

Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 93

Predict System Performance Chapter 5

EtherNet/IP Module Serving as a Scanner

EtherNet/IP module 1 functions as a scanner.

EtherNet/IP module 1, in the chassis with the main controller, must perform

these tasks:

• Communicate with five remote I/O chassis. The EtherNet/IP module

connects to the I/O modules in each chassis this way:

– One rack-optimized connection to digital I/O modules at an

RPI = 20 ms

– Three direct connections to three analog I/O modules at an

RPI = 50 ms

• Communicate with the PanelView Plus terminal via direct connections at

an RPI = 100 ms

• Communicate with the two other controllers with a produced tag at an

RPI = 20 ms

• Perform explicit messaging

1756-EN2T Module 1

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Rockwell-automation Ethernet Design Considerations Reference Manual Uživatelský manuál Strana 93