User Manual Owner's manual

3–6 Addressing Modes for Your Remote I/O
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Figure 3.5
16Ćpoint Input and Output Modules Using Two Words of the
Image Table
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Because these modules use a full word in the image table, the only
type of module you can use in a 2-slot I/O group with a 16-point
module is one that performs the opposite (complementary) function;
an input module complements an output module and vice-versa.
You can use an 8-point module with a 16-point module in a 2-slot
group; it must perform the opposite function. However, eight bits in
the I/O image table are unused.