Description
Product Overview
The ABB CI853K01 (3BSE018103R1) is a serial communication interface module for ABB AC 800M controllers used in System 800xA and related automation installations. It provides two independent serial communication channels, allowing the controller to exchange data with compatible external instruments, legacy equipment, and other supported serial devices. The module supports COMLI and Modbus RTU, with configurable master/slave operation where supported by the selected protocol and application. This makes it useful when integrating serial devices into a control system without replacing every existing instrument with a newer network interface.
Within the AC 800M architecture, the CI853K01 extends the controller’s serial communication capability through the CEX bus. Each channel uses an 8-pin female RJ-45 connector, and ABB specifies transmission rates from 75 to 19,200 bit/s. The module typically draws 100 mA from the 24 V supply and supports hot swapping under the applicable system procedures. These specifications are particularly relevant when connecting legacy instruments, serial meters, or compatible controllers that rely on Modbus RTU or COMLI. The actual communication behavior still depends on protocol configuration, device addressing, serial parameters, and the wiring arrangement.
For maintenance engineers, the ABB CI853K01 can provide a practical way to retain existing serial devices during a control-system upgrade or controller replacement project. Before installation, verify the controller model, Control Builder configuration, protocol requirements, baud rate, and connector pinout. Do not assume that an RJ-45 connector means Ethernet compatibility; the CI853 uses serial communication interfaces. Also check whether the original installation relies on custom serial communication or a specific protocol configuration. Preserving these details before removing the existing module can reduce commissioning problems and help restore communications more predictably.
Product Introduction (Non-Templated)
Legacy serial instruments can remain serviceable long after the surrounding control system has been upgraded. The ABB CI853K01 adds two serial channels to compatible AC 800M controllers, supporting COMLI and Modbus RTU communication at rates from 75 to 19,200 bit/s.
For an AC 800M communication expansion or legacy-device replacement, verify the protocol, port configuration, and wiring before commissioning. The module supports hot swapping, but replacement must follow the installed system’s approved maintenance procedure.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model | CI853K01 |
| Article Number | 3BSE018103R1 |
| Product Type | Serial communication interface module |
| Product Series | AC 800M |
| Control System | ABB System 800xA / AC 800M |
| Communication Protocols | COMLI, Modbus RTU |
| Number of Channels | 2 |
| Serial Interface | RS-232C |
| Connector Type | 8-pin female RJ-45 |
| Transmission Speed | 75–19,200 bit/s |
| Communication Mode | Master/slave, according to protocol and configuration |
| Typical 24 V Consumption | 100 mA |
| Maximum Units on CEX Bus | 12 |
| Hot Swap | Supported, subject to system procedures |
| Operating Temperature | 0 to +55 °C |
| Storage Temperature | −40 to +70 °C |
| Protection Class | IP20 |
| Dimensions | 59 × 185 × 127.5 mm (W × H × D) |
| Weight | Approximately 700 g, including base |
| Condition | New surplus subject to stock confirmation and inspection |
Specifications are based on ABB’s CI853 product information. Confirm the applicable documentation revision and complete package contents before ordering.
CI853K01
Related Products
The following products support related AC 800M communication and controller functions. They have distinct interfaces or purposes and should not be treated as direct replacements unless the system configuration permits it.
1. ABB TP853 — The baseplate associated with the CI853K01 package. It provides the physical mounting and serial-port connection arrangement required by the module. Confirm whether the baseplate is included with the supplied unit.
2. ABB CI854BK01 (3BSE069449R1) — A PROFIBUS DP-V1 communication interface for AC 800M. It is relevant when integrating PROFIBUS devices rather than serial COMLI or Modbus RTU equipment.
3. ABB CI855 (3BSE018106R1) — An AC 800M communication interface for ABB MasterBus 300. Its communication function differs from the CI853’s serial interface.
4. ABB CI856 (3BSE026055R1) — An interface for ABB S100 I/O. It supports a different system integration purpose and is not a substitute for the CI853 serial communication module.
5. ABB CI867AK01 (3BSE092689R1) — A Modbus TCP interface for supported AC 800M configurations. Consider it when Ethernet-based Modbus TCP communication is required rather than the CI853’s serial connection. Check software and controller compatibility before selection.
6. ABB PM861 — An AC 800M controller family member that can form part of a system using communication interface modules. Confirm the exact controller revision, firmware, and supported module configuration before pairing it with a .
7. ABB PM864A — An AC 800M controller used in process-control installations. Its suitability for a particular configuration depends on the installed hardware, software version, and project configuration.
8. ABB CI853 — The communication-interface module designation within the ordering package. When sourcing a replacement, check whether the offer includes the complete K01 package and associated TP853 baseplate rather than the module alone.
Frequently Asked Questions (FAQ)
1. What is the ABB 3BSE018103R1 used for?
The expands serial communication capability on compatible ABB AC 800M controllers. It provides two channels for exchanging data with supported serial devices using protocols such as COMLI and Modbus RTU. Typical use cases include legacy instrument integration and serial communication with compatible external equipment.
2. Does the support Modbus RTU and COMLI?
Yes. ABB documents both protocols for the . Before connecting a device, configure the required protocol and serial parameters, including baud rate and other settings required by the application. The external device must support the selected protocol and communication mode.
3. Can I hot-swap the ABB while the controller is running?
ABB lists hot swapping as supported for this module. However, that does not mean every installation can be serviced without operational consequences. Verify the controller configuration, system state, maintenance procedure, and impact of losing communications on the connected devices before removing the module. Follow the applicable ABB instructions and plant safety requirements.
4. Does the use Ethernet because it has RJ-45 connectors?
No. The connector shape alone does not determine the communication technology. The uses serial RS-232C communication through its RJ-45 connectors; it is not an Ethernet interface. Use the correct serial cable and pinout specified for the installation. Connecting it as though it were an Ethernet port can prevent communication and may create wiring problems.
5. Can I replace the with a CI854BK01?
Not as a direct, function-for-function replacement. The provides serial communication, while the CI854BK01 is a PROFIBUS DP-V1 interface. The correct choice depends on the connected devices, network protocol, controller configuration, and required communication architecture.
6. Will replacing the erase my AC 800M application logic?
Replacing a communication interface module does not, by itself, establish that the controller application will be erased. However, communication settings, channel assignments, protocol configuration, and device parameters must be preserved and verified. Back up the project and document the existing serial configuration before maintenance, then test both channels and confirm that all required devices exchange data correctly.
7. How can I verify a new-surplus ABB before purchasing?
Request photographs of the actual module label, article number, connectors, and baseplate. Confirm that the part number is 3BSE018103R1, and ask for an inspection record and details of any functional testing performed.
New surplus does not necessarily mean factory sealed or fully tested. For a critical AC 800M installation, confirm the return terms and warranty in writing, and test serial communications with compatible equipment before returning the affected control function to normal service.
