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What is the maximum number of Momentum IO bases allowed on IObus?

An IObus network may consist of as many as 256 nodes, however there are also limitations on the number of I/O words available. The limit is based on the processor type as shown in the following table:

Processor Type
Max. Input Words
Max. Output Words
171CCS76000
128
128
171CCC76010
256
256
171CCC96020
256
256
171CCC96030
256
256

Note: Processors that support IEC are limited to a maximum number of 1408 used I/O points, regardless of the number of modules.
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