Description
Product overview
The ABB CI867K01 3BSE043660R1 is designed for control systems that need Modbus TCP data exchange between an AC 800M controller and external Ethernet-based equipment. Typical integration tasks include exchanging process values, commands, status information, and diagnostic data with compatible devices. The module supports both master and slave functionality, allowing it to participate in different Modbus TCP architectures depending on the application configuration.
The original CI867 provides two Ethernet channels with different capabilities: Channel 1 supports full-duplex communication at up to 100 Mbps, while Channel 2 supports 10 Mbps. The module uses the controller’s CEX-Bus for its internal connection and receives its operating power through the system’s 24 V supply arrangement. ABB specifies support for module redundancy and hot swapping, but the actual configuration and replacement procedure must follow the installed controller’s hardware and software requirements.
For procurement, confirm that the required part is the original CI867-based kit rather than the later CI867A variant. Check the full product number, TP867 baseplate inclusion, Ethernet port arrangement, and the controller’s installed configuration. For used or refurbished units, request photographs of the actual module and baseplate, condition details, and test records. A power-on test alone does not establish correct Modbus communication with the target equipment.
Product introduction
The ABB CI867K01 provides a dedicated Modbus TCP interface for AC 800M control systems. Its dual-channel arrangement distinguishes the original CI867 from the single-channel CI867A, an important consideration when replacing installed hardware.
Before installation, verify the network topology, master/slave configuration, and controller support. Confirm that the supplied kit includes the required TP867 baseplate if the purchase specification calls for the complete assembly.
Key technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Kit model | CI867K01 |
| Product number | 3BSE043660R1 |
| Included module | CI867 |
| Included baseplate | TP867 |
| Product type | Modbus TCP communication interface kit |
| Controller family | ABB AC 800M |
| Communication protocol | Modbus TCP |
| Operating roles | Master and slave |
| Number of Ethernet channels | 2 |
| Channel 1 speed | 10/100 Mbps, full duplex |
| Channel 2 speed | 10 Mbps |
| Ethernet connector | 8-pin RJ-45 female |
| Internal controller connection | CEX-Bus |
| Typical 24 V current consumption | 160 mA |
| Maximum units on CEX-Bus | 12 |
| Maximum slave units | Up to 70 |
| Maximum master units | Up to 8 |
| Module redundancy | Supported |
| Line redundancy | Not supported by the module itself |
| Hot swap | Supported, subject to system procedure |
| Operating temperature | 0 to +55°C |
| Storage temperature | -40 to +70°C |
| Protection class | Verify applicable product documentation; do not assume an IP rating |
| Dimensions, including base | 59 × 186 × 127.5 mm |
| Weight, including base | Approximately 700 g |
| Product condition | Confirm at quotation |
| Compatibility | Verify controller, firmware, configuration, and network requirements |
Technical note: The connection limits and network performance depend on the configured application and overall system architecture. Confirm these values against the applicable ABB documentation before using them as design limits.

CI867 3BSE043660R1
Related products
Related AC 800M communication interfaces; not direct replacements for CI867K01.
| Model | Communication function |
|---|---|
| CI867A — 3BSE092689R1 | Modbus TCP interface; later single-channel design |
| CI854BK01 | PROFIBUS DP-V1 interface |
| CI855 | MasterBus 300 interface |
| CI856 | S100 I/O interface |
| CI857 | INSUM interface |
| CI868A — 3BSE092691R1 | IEC 61850 communication interface |
| CI871A — 3BSE092693R1 | PROFINET IO interface |
| CI873A — 3BSE092695R1 | EtherNet/IP and DeviceNet interface |
These modules serve different protocols or hardware functions. Selection must be based on the required communication standard and the installed controller configuration.
Frequently asked questions
1. What is the ABB CI867K01 used for?
It connects an ABB AC 800M controller to external Ethernet devices through Modbus TCP and supports both master and slave roles.
2. What is included in 3BSE043660R1?
The product documentation identifies the kit as including the CI867 communication interface and TP867 baseplate. Confirm package contents when purchasing surplus stock.
3. Is CI867K01 interchangeable with CI867A?
Do not assume direct interchangeability. The original CI867 supports two Ethernet channels, while CI867A uses one 10/100 Mbps channel. Verify hardware requirements, controller software compatibility, and application configuration before substitution.
4. Can the module operate as both a Modbus TCP master and slave?
Yes. ABB’s product information specifies support for both operating roles. The actual role and communication relationships depend on the application configuration.
5. Does support redundancy and hot swapping?
ABB specifies module redundancy and hot-swap support. This does not mean every installation can be serviced without interruption; follow the system-specific maintenance procedure and verify the redundancy configuration.
6. What should be checked when buying a used or refurbished unit?
Verify the complete product number, module and baseplate condition, connector integrity, and testing records. For operational assurance, request evidence of Modbus TCP communication testing rather than relying only on visual inspection or a basic power-on check.
7. What information is needed to confirm replacement compatibility?
The most useful details are the existing module’s complete product number, AC 800M controller model, installed system version, network configuration, and whether the installation depends on both Ethernet channels.
Procurement recommendation
For ABB 3BSE043660R1, prioritize confirmation of the original dual-channel hardware, the TP867 baseplate, and the installed Modbus TCP configuration. Do not substitute CI867A or another communication interface solely because the product descriptions appear similar. For used or refurbished stock, request actual-unit photographs and test records that establish the condition of the hardware and the scope of functional testing.
