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In the ROC 800 Series, the Logical Compatibility Mode can be configured to be 16-Points Per Module or 8-Points Per Module. This will determine which conversion chart will be used. The Logical Compatibility Mode is found in ROCLink under ROC -> Information (see screen shot below) .
and the Point Number can be found on this display in ROCLINK:
Converting Point Number to Decimal Equivalent: 8-Point Logical
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Converting Point Number to Decimal Equivalent: 16-Point Logical
If the Logical Compatibility Mode is set to 16-Points Per Module, use the conversion chart below. Note that logical numbers beyond 239 are not available to be polled.
Use the following syntax to address I/O points by their physical location:
<T.P:L> or <IO Point Type>.<Parameter>:< Physical Location >.
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The following picture shows how modules locations are numbered in the ROC809 (ROC Plus Protocol). This is another way that you can find the physical location numbers.
ROC 800 Module Offsets
Logical I/O Addressing
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