Understanding the CI867AK01 Modbus TCP Interface
When selecting a communication interface for industrial automation, engineers need a reliable bridge between controllers and Ethernet devices. The ABB CI867AK01 (3BSE043660R1) serves as a Modbus TCP interface designed for AC 800M controllers. This module combines a CI867A communication interface with a TP867 baseplate, supporting both master and slave functionality on a single channel.
Modbus TCP remains a widely adopted open standard due to its simplicity and ease of integration. The CI867AK01 leverages this protocol to connect controllers with external Ethernet devices, operating at level 7 of the OSI model. Its single Ethernet port supports full duplex at 100 Mbps, making it suitable for modern industrial networks.
Key Specifications to Evaluate
The CI867AK01 operates with a transmission speed of 10/100 Mbit/s on channel 1, using an RJ-45 female connector. It supports up to 70 slave devices and 8 master units per module, providing flexibility for various network topologies. The module works with System 800xA versions 6.0.3.3, 6.1.1, and later, ensuring compatibility with current ABB ecosystems.
Environmental ratings include an operating temperature range of 0 to +55 °C and storage from -40 to +70 °C. The unit meets IP20 protection class and complies with UL 61010-1 and UL 61010-2-201 for electrical safety. It also holds hazardous location certifications including UL 60079-15 and cULus Class 1, Zone 2, making it suitable for demanding environments.
Applications in Modern Manufacturing
In a typical packaging line, the CI867AK01 enables real-time data exchange between an AC 800M controller and multiple sensors or actuators. Its support for up to 70 slave devices allows comprehensive monitoring of conveyor speeds, temperature, and product flow. The module's redundant capability and hot-swap support minimize downtime during maintenance.

For water treatment facilities, the interface connects programmable logic controllers to remote terminal units using Modbus TCP. The module's G3 corrosion protection and compliance with marine certifications (DNV-GL) make it reliable in humid or corrosive environments. Engineers can integrate it into existing networks through an Ethernet switch, simplifying deployment.
Integration with AC 800M Systems
The CI867AK01 connects directly to the AC 800M controller via the CEX-Bus, supporting up to 12 units on the bus. It includes a DC/DC converter that derives appropriate voltages from the +24 V supply. The module works with HI Controllers, expanding its use in safety-critical applications.
For system compatibility, the CI867A only uses one Ethernet port (100 Mbit/s), unlike the earlier CI867 which supported two ports. This design simplifies cabling and reduces potential points of failure. The module supports both master and slave functionality, allowing flexible configuration as a client or server in Modbus TCP networks.
Business Value and ROI
Investing in the CI867AK01 reduces total cost of ownership through its robust design and long service life. The hot-swap capability allows replacement without system shutdown, minimizing unplanned downtime. Its support for up to 70 slave devices reduces the need for additional interface modules, lowering hardware costs.

The module's compliance with EU RoHS, UAE RoHS, and CN RoHS ensures environmental responsibility. With certifications like CE marking and WEEE compliance, it meets global regulatory standards. This reduces compliance risks for multinational operations.
Frequently Asked Questions
What is the maximum number of slave devices the CI867AK01 supports?
The CI867AK01 supports a maximum of 70 slave devices and 8 master units per module. This allows comprehensive network coverage in medium-sized industrial applications.
Can the CI867AK01 be used in hazardous locations?
Yes, the module holds hazardous location certifications including UL 60079-15 and cULus Class 1, Zone 2, AEx nA IIC T4. It also meets G3 corrosion protection standards, making it suitable for harsh environments.
What controllers are compatible with the CI867AK01?
The CI867AK01 works with ABB AC 800M controllers and HI Controllers. It requires System 800xA version 6.0.3.3, 6.1.1, or later versions for proper operation.
Why Choose CtrlTechDaily for Your CI867AK01
CtrlTechDaily provides genuine ABB automation components with verified specifications. Our team ensures each CI867AK01 unit meets manufacturer standards before shipment. We offer competitive pricing and fast delivery to support your project timelines.
For lifecycle status and availability, please verify with CtrlTechDaily before ordering. Our experts can assist with compatibility questions and system integration advice.
