CI854AK01 3BSE030220R1 is the ABB AC 800M PROFIBUS DP-V1 communication interface kit. The ordering identity covers the CI854A electronics and the matching TP854 baseplate, so the kit code should not be reduced to the interface-module marking during procurement.

The interface operates as a PROFIBUS master for cyclic I/O and DP-V1 services. Controller software, field-device descriptions and the existing network design remain essential parts of a controlled spare or migration decision.

• DP-V1 support combines scheduled process-data exchange with acyclic access required by suitable intelligent field devices.
• The CEX-bus format integrates fieldbus communication directly with the AC 800M controller hardware structure.
• Redundant interface and cable arrangements can be engineered with compatible controller and slave equipment.
• Diagnostic information and bus parameters are managed through the AC 800M engineering environment.

• AC 800M control systems using PROFIBUS-connected remote I/O and field instruments.
• Process plants that require deterministic cyclic data plus DP-V1 device services.
• Documented replacement of an installed CI854A and TP854 assembly.

• ABB identifies this kit in the Limited phase with a replacement available; CI854BK01 article 3BSE069449R1 is the published successor direction.
• Back up the Control Builder project, GSD files, slave parameters, node allocation and redundancy design before changing hardware.
• Check controller and system-software compatibility before introducing a newer B-version interface.
• Commission the bus from physical-layer checks through slave diagnostics, cyclic data validation and application-interlock testing.