Ownership
Every I/O module in a Logix 5000 control system must be owned by a controller, also known
as the owner-controller. When the PointMax I/O modules are used in a Logix 5000 control
system, the owner-controller performs the following:
- Stores configuration data for every module that it owns.
- Sends the I/O module configuration data to define module behavior and begin operation in the control system.
Each PointMax I/O module must continuously maintain communication with its
owner-controller during normal operation.
When the owner-controller establishes I/O connection to the module, it sends the
configuration data of the module. Two possible results are:
- If the configuration is appropriate to the module, a connection is established and operation begins.
- If the configuration is not appropriate to the module, the data is rejected and the Connection view in the Module Properties indicates that an error occurred. The configuration can be inappropriate for many reasons. For example, a mismatch in electronic keying that helps prevent operation on incompatible module.
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