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I am running  v280, v200-18-e5b, and io-d16a3-to16. I am wondering why the high speed outputs are different between the snap in and the expansion modules? In the hardware configuration the snap in asks for 3 operands and the expansion asks for only 2.

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The Snap IO modules are an older design and require a separate bit to "turn on" the high speed output.  The IO-DI16 is a newer product and the output will turn on just by calling its address.

Is this a new installation?  I would totally recommend the V560 if it is - color and much more power for $200 more.

Joe T.

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