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Selction of 5xBIO modules; five slots are assigned in the IED case.
Number of circuits on a module
Binary input circuits (BI)
Binary output circuits (BO)
Selections of BIO module combination
Independent type & variable thresholds
Auxiliary (normal) or Form C type
1xBI1A+1xBIO1A+1xBIO3A+2xBO2A
2xBI1A + 1xBI2A + 1xBO1A + 1xBIO3A
1xBI1A+1xBO1A+1xBIO1A+2xBIO3A
1xBI2A+2xBI3A+1xBIO3A+1xBO2A