Publication 1756-UM523F-EN-P - December 2006
ControlLogix Redundancy System Overview
21
Quick Start Checklists
These checklists provide a summary of the criteria for a successful
ControlLogix redundancy system. See the remaining chapters for more
information on each parameter.
System Layout
Parameter
Criteria
Page
ControlNet Networks
•
ControlNet networks are the primary networks for the system.
•
OK to bridge to devices on other networks, such as DeviceNet, Universal Remote I/O,
and DH+ networks.
•
Networks follow the guidelines in Logix5000 Controllers Design Considerations,
publication 1756-RM094.
28, 31
I/O Placement
•
All I/O modules in remote chassis or DIN rails (no I/O in the local chassis)
•
All I/O in
only
these locations:
•
Same ControlNet network as the redundant controllers (no bridging)
•
DeviceNet network (via a 1756-DNB module in a remote chassis)
•
Universal remote I/O network (via a 1756-DHRIO module in a remote chassis)
28, 31
ControlNet Network Update
Times
•
NUTs
≤
90 ms
•
NUTs
≤
specified relationship to each other
35
Number of ControlNet Nodes
At least 2 nodes on each network in addition to the CNBs in the redundant chassis. For
example, each ControlNet network has at least 4 nodes.
35
ControlNet Node Assignments
•
Nonredundant nodes use the lowest node numbers.
•
CNB modules in the redundant chassis set close to the scheduled network maximum
(SMAX).
•
2 consecutive node addresses for each set of partner CNB modules (one in each
chassis).
•
Switches of each partner CNB module set to the same node address.
18, 35
Network Access Ports
No devices connected to the network access ports of CNB modules in the redundant
chassis.
28
EtherNet/IP Networks
EtherNet/IP networks are only for HMIs, workstations, and messaging (no control of I/O).
No EtherNet/IP network for:
•
control of I/O.
•
peer interlocking (produced and consumed tags).
28, 38
Содержание 1756-CNB/E
Страница 4: ...Publication 1756 UM523F EN P December 2006 Summary of Changes 4 Notes...
Страница 10: ...Publication 1756 UM523F EN P December 2006 10 Table of Contents...
Страница 26: ...Publication 1756 UM523F EN P December 2006 26 ControlLogix Redundancy System Overview Notes...
Страница 42: ...Publication 1756 UM523F EN P December 2006 42 Design the System Notes...
Страница 64: ...Publication 1756 UM523F EN P December 2006 64 Configure the System Redundancy Module Notes...
Страница 102: ...Publication 1756 UM523F EN P December 2006 102 Configure and Program the Controller Notes...
Страница 146: ...Publication 1756 UM523F EN P December 2006 146 Update Modules and Redundant Systems Notes...
Страница 162: ...Publication 1756 UM523F EN P December 2006 162 Set Up EtherNet IP Communication Across Subnets Notes...
Страница 168: ...Publication 1756 UM523F EN P December 2006 168 Convert an Existing System to Redundancy Notes...
Страница 178: ...Publication 1756 UM523F EN P December 2006 178 Redundant System Restrictions Notes...
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