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Can I replace the 170NEF11021 module with 172PNN21022?

No, you can not. The 170NEF11021 is a top hat module that is used in a 984 Ladder Logic data format. The 172PNN21022 is an optional communication module that requires a processor top hat.

Legacy KB System (APS) Data: RESL187588 V1.0, Originally authored by RoAl on 08/17/2007, Last Edited by RoAl on 08/17/2007
Related ranges: Modicon Momentum
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