272
Adjusting the Communications Load
Section 10-2
• Is the network bandwidth usage without multicast filtering under 100
Mbps for each node or the usage of capacity without multicast filtering
under 100% for each node? (These appear as “Mbit/s” and “Usage of
Capacity” in the dialog box shown on page 269.)
→
If the total bandwidth usage exceeds 100 Mbps, the bandwidth of part
of the transmission path (e.g., a switching hub or media converter) had
been exceeded as the result of how the network was wired (e.g., switch
hub or cascade connection), causing a tag data link to operate abnor-
mally. Check the bandwidth of the transmission path for all cascade con-
nections. If the bandwidth is exceeded, rewire the network or increase the
bandwidth between switching hubs (e.g., to 1 Gbps). If these countermea-
sures are not possible, change the connection settings, e.g., the RPI set-
tings, and adjust the bandwidth for all cascade connections until the total
network bandwidth is not exceeded.
10-2-4 Changing the RPI
You can check the usage of capacity offline without multicast filtering against
the tag data link's allowable bandwidth by following the procedures in 10-2-1
Checking Bandwidth Usage for Tag Data Links. The usage of capacity without
multicast filtering can be adjusted against the tag data link's allowable band-
width by changing the packet interval (RPI). If the required communications
performance cannot be achieved by changing the settings, reevaluate the net-
work starting with the network configuration.
1,2,3...
1.
Make the required settings in the Network Configurator’s Network Config-
uration Window.
2.
Click the Detail Button in the Usage of Device Bandwidth Area at the bot-
tom of the Network Configuration Window.
The Usage of Device Bandwidth Dialog Box will be displayed.
Summary of Contents for CJ2H-CPU6 - REV 02-2010
Page 2: ......
Page 4: ...iv...
Page 6: ...vi...
Page 14: ...xiv...
Page 18: ...xviii...
Page 38: ...12 Network Configurator Overview Section 1 5...
Page 58: ...32 Selecting the Network Devices Section 2 3...
Page 116: ...90 Auxiliary Area Data Section 4 5...
Page 222: ...196 Message Communications Errors Section 7 6...
Page 364: ...338 Using the Backup Tool Section 13 3...
Page 402: ...376 CS CJ series Ethernet Unit Function Comparison Appendix A...
Page 404: ...378 Ethernet Network Parameters Appendix B...
Page 406: ...380 TCP Status Transitions Appendix C...
Page 452: ...426 Precautions for Using Windows XP Vista or Windows 7 Appendix G...
Page 460: ...434 Index...
Page 462: ...436 Revision History...
Page 463: ......