In addition to answering the prior question posed, would you please clarify if you are just looking to upgrade you AC800M controller (i.e. go from a lower platform, such as a PM861 to a higher performing platform, such as a PM866) please also provide the following information:
- What controller are you currently running and what controller to you plant to upgrade to?
- Is the current controller non-redundant and do you plan to stay non-redundant or are you planning to make the controllers redundant?
- What version of 800xA are you currently running?
- Along with the controller upgrade, are you also planning to do an 800xA system software upgrade at the same time or will this just be a controller upgrade.
Answering these questions will help to provide a clearer picture to anyone looking at your question as to the actual consideration that must be taken into account and things that would be required to be done in order to upgrade a processor on your system.