Electronic keying mismatch

There is a problem communicating with the module due to an Electronic Keying mismatch. Check if:
module
A device, typically an I/O device, that communicates with the controller. The controller, a particular 1756-IB16I or a PanelView are all considered modules.
  • "Exact Match" keying was chosen and the module’s Minor Revision is incorrect
  • "Compatible Module" keying was chosen and the physical module cannot emulate the module configured in the software
  • the module in the chassis is different than the module configured in the software
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