ABB 3HAC058885-002 / 3HAC058887-002 identify NTCL01 and NTCS04 communication-module executions in the ABB S800 I/O family. Their role is to carry station data between the installed I/O assembly and its controller-side communication path.
The correct record for ABB 3HAC058885-002 / 3HAC058887-002 follows the fitted station architecture, connector arrangement and module position. Communication conductors, termination and the controller configuration are therefore read together.
When servicing ABB 3HAC058885-002 / 3HAC058887-002, isolate the station, label network and bus connections separately, then confirm link indication and controller data exchange after the module is seated.









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