The ABB CI867K01 is a Modbus TCP Communication Interface Kit designed for the System 800xA and AC 800M controller hardware family. The kit typically includes the CI867 communication interface module along with its corresponding TP867 baseplate. Installed on the CEX-bus (Communication Expansion bus) of an AC 800M controller, the CI867 module enables high-speed, dual-Ethernet Modbus TCP communication to integrate third-party PLCs, sub-systems, power meters, and drives into the ABB control architecture.
Key Specifications & Identification
| Attribute | Details |
| Manufacturer | ABB / Hitachi Energy |
| Kit Order Code | CI867K01 / 3BSE043660R1 |
| Module / Baseplate Code | CI867 Interface Module + TP867 Baseplate |
| System Compatibility | AC 800M Controllers (PM861, PM864, PM866, PM891, etc.) |
| Supported Protocols | Modbus TCP (Master and Slave modes) |
| Ethernet Interfaces | 2 × RJ45 Ethernet Ports (Ch1 & Ch2, 10/100 Mbps) |
| Redundancy Support | Supports CEX-bus redundancy and dual-channel network interface |
| Mounting / Form Factor | DIN-rail mounted via TP867 baseplate on the AC 800M CEX-bus |
Primary System Functions
- Modbus TCP Integration: Operates as both a Modbus TCP Client (Master) and Server (Slave), allowing AC 800M controllers to exchange process variables, setpoints, and alarms with external field devices.
- Dual-Channel Ethernet Ports: Features two isolated RJ45 Ethernet channels to support redundant network topologies, preventing communication loss if a network cable or switch fails.
- CEX-Bus Expansion: Plugs directly into the AC 800M side-expansion CEX-bus to offload communication processing from the main controller CPU (
PM8xx), preserving processor performance for core control logic. - Control Builder Integration: Configured and engineered directly within ABB Control Builder M, where Modbus IP addresses, memory mapping tables, and data polling rates are assigned.
Servicing & Installation Guidelines
- Baseplate CEX-Bus Coupling: The TP867 baseplate must be properly mated with adjacent CEX-bus baseplates or the CPU module before snapping onto the DIN rail to ensure bus signal continuity.
- ESD & Static Precautions: CMOS communication microprocessors require static protection—always wear a grounded anti-static wrist strap when inserting or removing the CI867 module from its baseplate.
- Hot-Swap Capability: The CI867 module can be hot-swapped from its TP867 baseplate during controller operation, provided network redundancy and application software handling permit a temporary communication interruption.
- Firmware Matching: When replacing a CI867 card, verify via Control Builder M or System 800xA Diagnostics that the module’s firmware version is compatible with the AC 800M system system baseline.






