
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
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