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Allocating Network Bandwidth Usage and Calculating the Best EPI
Section 2-2
application uses explicit message communications. If timeouts occur, reduce
the network bandwidth usage rate (i.e., increase the unused bandwidth).
Performing Only Safety I/O Communications
When performing only safety I/O communications, there is no problem if the
network bandwidth used for safety I/O communications is approximately 90%.
If the bandwidth exceeds 90%, obtain the best average EPI for all connections
by referring to
2-2-3 Allocating Network Bandwidth Usage Rates and Calculat-
ing Best EPI
and change the EPI setting for each connection.
Performing Safety I/O Communications and Standard I/O Communications
When both safety I/O communications and standard I/O communications are
used on one network, it is necessary to determine the network bandwidth to
use for each type of communications. Problems will occur if only the network
bandwidth for safety I/O communications is determined, because some net-
work bandwidth is required for standard I/O communications.
Refer to
2-2-3 Allocating Network Bandwidth Usage Rates and Calculating
Best EPI
and enter the network bandwidth used for each type of communica-
tions and set the best average EPI for each safety connection and the com-
munications cycle time of the Standard Master.
2-2-2
Displaying Device Bandwidth Usage Conditions
The conditions of bandwidth used in the EtherNet/IP network can be dis-
played. The function applies to all EtherNet/IP devices and can be used if the
EtherNet/IP network is displayed.
1.
Click the tab for the EtherNet/IP Network Configuration Window.
2.
Click the
Detail
Button. The Usage of Device Bandwidth Dialog Box will be
displayed.
Содержание DeviceNet Safety
Страница 1: ...SYSTEM CONFIGURATION MANUAL Cat No Z905 E1 07 DeviceNet Safety...
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Страница 5: ...DeviceNet Safety System Configuration Manual Revised July 2009...
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Страница 11: ...ix TABLE OF CONTENTS Appendix 277 Glossary 333 Index 335 Revision History 339...
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Страница 98: ...64 Creating a Virtual Network Section 3 4 A new connected network will be created as shown below...
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