Allen-Bradley 5069-IB16 - Configuration Changes in an Input Module with; Multiple Owners

30 Rockwell Automation Publication 5069-UM004A-EN-P - April 2019
Chapter 1 Digital Module Operation in a Control System
• The controllers that do maintain, but do not ‘own’, the module
configuration are similar to Listen-only controllers.
The difference between the controllers is that the controllers that
maintain, but do not own, the module configuration can use a Multicast
or Unicast connection over the EtherNet/IP network.
For more information on Listen-only controllers, see
Listen Only on
page 56.
Configuration Changes in an
Input Module with
Multiple Owners
You must be careful when changing the configuration data of an input module
in a multiple-owner scenario. If the configuration data is changed in owner A
and sent to the module, the changed configuration data is accepted as the new
configuration for the module. Owner B continues to listen unaware that any
changes have been made in the behavior of the input module, as illustrated.
Figure 6 - Module Configuration Changes with Multiple Owners
DC INPUT
5069-IB16
DC OUTPUT
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ANALOG INPUT
5069-IY4
ANALOG OUTPUT
5069-OF8
COUNTER
5069-HSC2xOB4
SA Power MOD Power
Compact 5000™ I/O
SA Power MOD Power
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
DC INPUT
5069-IB16
DC OUTPUT
5069-OB16
ANALOG INPUT
5069-IY4
ANALOG OUTPUT
5069-OF8
COUNTER
5069-HSC2xOB4
SA Power MOD Power
Controller A sends new configuration to the module. Controller B is unaware of any configuration changes.
IMPORTANT A message in Logix Designer application alerts you to the possibility of a
multiple owner-controller situation and lets you inhibit the connection
before changing the module configuration. When changing the
configuration for a module with multiple owners, we recommend that you
inhibit the connection.