CI853K01 communication interface: serial protocol, wiring and AC 800M integration
The ABB CI853K01 is an AC 800M serial communication interface with article number 3BSE018103R1. ABB lists two channels and support for COMLI and Modbus RTU, with transmission rates from 75 to 19,200 bit/s. The interface does not provide line or module redundancy, so network availability and failover must be addressed in the system design.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Type designation | CI853K01 |
| Article number | 3BSE018103R1 |
| Protocols | COMLI and Modbus RTU family support; configuration-dependent modes |
| Serial channels | 2 |
| Transmission speed | 75–19,200 bit/s family range |
| Redundancy | No line or module redundancy for this interface |
| Hot swap | Supported by the CI853 family; observe controller and system procedures |
The table summarizes family or catalog values for identification and initial selection. Confirm the nameplate, environmental limits, standards, revision and options for the exact device before procurement or engineering approval.
Application and system selection
Use the module where serial devices need to exchange data with an AC 800M controller. Confirm the required protocol, master/slave role, RS-232 or RS-485 physical layer, cable length, termination and grounding. Modbus addressing, register maps and timeout behavior should be agreed with the connected device supplier before commissioning.
Configuration and compatibility
Verify the complete article number and controller hardware/firmware compatibility. Check the CEX-bus loading, connector arrangement, channel pinout and communication mode on each port. CI853 is not a substitute for the PROFIBUS CI854 interface; the protocols, redundancy behavior and configuration files differ.
Related models and order-code references
The following designations are related catalog references, not automatic substitutes. Check each complete code, rating, connection, revision and application requirement before selecting a variant.
- 3BSE018103R1 CI853K01
- 3BSE018103R1, CI853K01
- 3BSE018103R1,CI853K01
- CI853
Installation and commissioning
Power and isolate the assembly according to the AC 800M service procedure, then seat the module and label both serial channels. Configure baud rate, parity, address and protocol consistently at both ends. Test each channel with diagnostics and representative reads/writes, then document cabling, node addresses and fail-state behavior.
Replacement and procurement information
For a quotation or replacement review, provide the complete designation CI853K01, the order code where applicable, serial or hardware revision, quantity, operating environment, connected equipment and required delivery date. Include a legible nameplate image and relevant wiring, loop or switchgear drawing so the exact interface and configuration can be checked.
Ask the supplier to confirm accessories, revision compatibility and any approved successor in writing. Do not select solely from a family name or product photograph. Follow the current ABB installation and safety instructions for the exact unit.
