Publication 1756-UM001G-EN-P - January 2007
Place, Configure, and Monitor I/O Modules
61
Add 1756 I/O at Runtime
With RSLogix 5000 programming software, version 16, you:
•
can only add 1756 I/O modules to the Controller Organizer at
runtime.
•
can remotely add the 1756 I/O modules to the local chassis via
the unscheduled portion of a ControlNet network.
•
can remotely add the 1756 I/O modules to the local chassis via
the unscheduled portion of an EtherNet/IP network.
ControlNet I/O Considerations
When you add ControlNet I/O at runtime:
•
remember that the ControlNet I/O modules you add can be
added to existing rack-optimized connections or added as direct
connections.
You cannot create new rack-optimized connections when
adding ControlNet I/O modules at runtime.
•
disable the Change of State (COS) feature on digital input
modules because it can cause inputs to be sent more quickly
than the RPI.
•
dedicate one ControlNet network to I/O communication only.
On the dedicated I/O network, make sure there is:
–
no HMI traffic.
–
no MSG traffic.
–
no programming workstations.
•
RPIs faster than 25 ms for unscheduled modules will overload
the 1756-CNB or 1756-CNBR communication module, so:
–
use a NUT if 10 ms or more.
–
keep the SMAX and UMAX values as small as possible.
•
you can add I/O modules until you reach:
–
75% utilization of the 1756-CNB or 1756-CNBR
communication module.
–
a utilization increase of 1...4% for each I/O module you add,
depending on the RPI.
–
48 connections on the 1756-CNB or 1756-CNBR
communication module.
–
< 350,000 bytes as the remaining unscheduled bandwidth on
the ControlNet network.
Содержание controllogix 1756-L55M12
Страница 4: ...Publication 1756 UM001G EN P January 2007 Summary of Changes 4 Notes...
Страница 10: ...Publication 1756 UM001G EN P January 2007 10 Notes...
Страница 20: ...Publication 1756 UM001G EN P January 2007 20 Directly Connect to the Controller via the Serial Port Notes...
Страница 66: ...Publication 1756 UM001G EN P January 2007 66 Place Configure and Monitor I O Modules Notes...
Страница 82: ...Publication 1756 UM001G EN P January 2007 82 Develop Applications Notes...
Страница 122: ...Publication 1756 UM001G EN P January 2007 122 Maintain Nonvolatile Memory Notes...
Страница 130: ...Publication 1756 UM001G EN P January 2007 130 Maintain the Battery Notes...
Страница 134: ...Publication 1756 UM001G EN P January 2007 134 LED Indicators Notes...