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What's the limitation of M258 expansion modules and I/O number.

1) Modules Max: The bus allows to add local IO and remote IO up to 250 slices IO.

2) Typical total TM5 digital I/O needs: Up to 2400 I/Os (Including Local & Remote racks)

3) M258 logic controller enables up to 200 analog I/Os and/or temperature modules to be connected

4) Maximum number of %IW/%QW: 4096 bytes for the Input and 4096 bytes for the Output.