Jim,
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1. There is no CP4E.? Are you talking about a CP2E, CP4N, or CP4?
2. MPC-M5 is a 2 series processor
3. The MPC-M5 does support ethernet control devices. In SIMPL you should see a MPCENET-1 in slot7 were all the ethernet devices go.
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If you are going from a 4 series to a 2 series you would have to make sure any control modules you are using are compatible with 2 series and of course recompile. Of course you also have less Com ports and such on the MPC-M5.
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