Siemens SINAMICS S Series List Manual page 1130

Function Diagrams
CU310 input/output terminals
2.4 CU310 input/output terminals
Function diagrams
2020 – Digital inputs, electrically isolated (DI 0 ... DI 3)
2030 – Digital inputs/outputs, bidirectional (DI/DO 8 ... DI/DO 9)
2131 – Digital inputs/outputs, bidirectional (DI/DO 10 ... DI/DO 11)
2-1130
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SINAMICS S List Manual (LH1), 07/2007
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