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SECTION 10
Communications Performance and Communications Load
This section describes the communications performance in an EtherNet/IP network, and shows how to estimate the I/O
response times and transmission delays.
Tag Data Link Communications Method . . . . . . . . . . . . . . . . . . . . .
Calculating the Number of Connections. . . . . . . . . . . . . . . . . . . . . .
Network Transmission Delay Time . . . . . . . . . . . . . . . . . . . . . . . . .
10-2 Adjusting the Communications Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Bandwidth Usage for Tag Data Links . . . . . . . . . . . . . . .
Tag Data Link Bandwidth Usage and RPI . . . . . . . . . . . . . . . . . . . .
Adjusting Device Bandwidth Usage. . . . . . . . . . . . . . . . . . . . . . . . .
Changing the RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RPI Setting Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10-3 I/O Response Time in Tag Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing of Data Transmissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EtherNet/IP Unit or CJ2H Built-in Port Data Processing Time . . . .
Effect on the CPU Unit’s Cycle Time. . . . . . . . . . . . . . . . . . . . . . . .
Tag Data Link I/O Response Time Calculation Example. . . . . . . . .
10-4 Tag Data Link Performance for CJ2M Built-in EtherNet/IP Ports . . . . . . . . .
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tag Data Link I/O Response Time . . . . . . . . . . . . . . . . . . . . . . . . . .
10-5 Message Service Transmission Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Transmission Delays (Excluding Delays in the Network)
Содержание CJ2H-CPU6 - REV 02-2010
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Страница 38: ...12 Network Configurator Overview Section 1 5...
Страница 58: ...32 Selecting the Network Devices Section 2 3...
Страница 116: ...90 Auxiliary Area Data Section 4 5...
Страница 222: ...196 Message Communications Errors Section 7 6...
Страница 364: ...338 Using the Backup Tool Section 13 3...
Страница 402: ...376 CS CJ series Ethernet Unit Function Comparison Appendix A...
Страница 404: ...378 Ethernet Network Parameters Appendix B...
Страница 406: ...380 TCP Status Transitions Appendix C...
Страница 452: ...426 Precautions for Using Windows XP Vista or Windows 7 Appendix G...
Страница 460: ...434 Index...
Страница 462: ...436 Revision History...
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