Design Considerations Reference Manual User guide

96 Rockwell Automation Publication ENET-RM002C-EN-P - May 2013
Chapter 5 Predict System Performance
For example, use the worksheet in Appendix A for each of the five EtherNet/IP
modules as follows.
The total pps of 220 is well within the 1756-EN2T/A module’s, firmware
revision 2.003, remaining bandwidth of 9000 pps.
EtherNet/IP Modules 2 and 3 with Consumed Tags
EtherNet/IP modules 2 and 3 interface two consumer controllers to the network.
EtherNet/IP Module ID: 4 - 8
Rack-optimized Connections 1 @ 20 ms
= (2 x connections)/RPI
= (2 x 1)/ 20 ms = 100
Direct Connections 3 @ 50 ms
= (2 x connections)/RPI
= (2 x 3)/ 50 ms = 120
Produced Tag Connections 0
= (1 + connections)/RPI
for each produced tag
= N/A
Consumed Tags 0
= 2/RPI for each consumed tag
= N/A
Total Packets Per Second 220
1756-EN2T Module 2 1756-EN2T Module 3