Description
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BrandABB
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ModelCI867K01
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Product NameModbus TCP Communication Interface Module
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Place of OriginSweden
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Customs HS Code851762
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Part number3BSE043660R1
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Dimensions186 mm × 59 mm × 127.5 mm
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Weight0.7 kg
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Operating Temperature-20℃ ~ +60℃
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Storage Temperature-40℃ ~ +70℃
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Warranty12 month
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Product Statusnew and original
Features of ABB CI867K01 (3BSE043660R1)
Dual Ethernet channel design
It is fitted with two independent RJ45 Ethernet ports. Channel 1 supports 10/100 Mbps full-duplex communication, while Channel 2 supports 10 Mbps half-duplex. It enables network segmentation or redundant network topology to lower the risk of communication outage triggered by single-point network failure.
Modbus TCP master/slave dual role
It supports Modbus TCP client (master) and server (slave) modes simultaneously. It performs read and write operations with third-party Modbus TCP devices such as transmitters, variable frequency drives, power meters and external PLCs. A total of up to 8 master devices and 70 slave devices can be managed across the two channels.
Module redundancy & hot swap capability
Redundant module configuration is available for critical control loops. Hot swap function is supported, allowing module replacement without shutting down the controller and minimizing plant downtime during maintenance work.
CEX bus expansion architecture
The module mounts on the AC800M CEX bus. It processes Ethernet communication independently, reducing the CPU load of the PM8xx controller so that the main controller can concentrate on core closed-loop control logic.
Integrated diagnostic & LED status indication
Onboard LED indicators display power, run and fault status. It provides comprehensive diagnostic data within Control Builder M and the 800xA system, covering link status, connection errors, timeouts and abnormal slave alarms to facilitate rapid fault diagnosis.

Power and mechanical specification
Typical power consumption: 160mA @24VDC, powered through the backplane. Ingress protection rating: IP20. Dimensions: 186 × 59 × 127.5 mm, net weight: 0.7kg. It adopts a compact plug-in design for rack mounting.
Environment and certification
Designed for industrial cabinet environments with an operating temperature range of 0~+60°C. It complies with the RoHS directive and adopts industrial EMC-resistant design to withstand electromagnetic interference in factory environments.
Software configuration
Configuration is implemented via ABB Control Builder M. Users set IP addresses, data mapping rules, polling intervals and fault handling parameters. Process variables, setpoints and alarm signals can be mapped bidirectionally between the AC800M and Modbus TCP field devices.
Wide system integration
It is extensively deployed in power, chemical, water treatment and metallurgical industries to connect the 800xA DCS with third-party Modbus TCP equipment. It functions as a gateway for data exchange between heterogeneous control systems.

Pre-installation Preparation
Perform lockout-tagout and cut off rack power before any work. Wear a grounded anti-static wrist strap to prevent static damage. Confirm compatibility among the CI867K01, matching TP867 baseplate and AC800M CEX bus rack. Check that the module firmware version matches the controller baseline. Prepare shielded twisted-pair Ethernet cables and the Control Builder M engineering software.
Mechanical Installation
Mount the TP867 baseplate onto the DIN rail and connect it to the CEX expansion bus of the AC800M rack. Insert the CI867K01 into the TP867 baseplate and fasten the module latch. Ensure full engagement of the CEX bus backplane connector. Plug Ethernet cables into the module’s dual RJ45 ports. Route network cables separately from high-power cables to mitigate EMI interference. Hot swap is supported for module replacement while the system remains operational.
Power-up and Hardware Inspection
Restore 24V DC power to the rack. Inspect the module LED indicators; the Power and Run LEDs should illuminate normally with no Fault LED alert. Validate the Ethernet link status on both communication channels. Verify the communication link between the CI867K01 and the AC800M controller over the CEX bus.
Software Project Configuration in Control Builder M
Open the existing AC800M project and add the CI867K01 hardware entry to the CEX bus hardware tree. Configure module parameters and assign IP address, subnet mask and gateway for Channel1 and Channel2. Select the Modbus TCP operating mode: master, slave or mixed mode. Create a list of remote Modbus TCP devices and enter their IP addresses, port numbers and slave IDs.
Build Data Mapping Table
Establish data mapping channels between AC800M controller variables and remote Modbus registers. Configure read/write access type, polling interval and data type matching for each register. Set read timeout and retry counts for every remote node. Define fault response actions, such as triggering communication failure alarms or holding the last valid data value.
Download Project to Controller
Compile the full project and download it to the AC800M controller, then activate the configuration. The CI867K01 will automatically initialize Modbus TCP communication after downloading. Check online status to confirm successful connections with all Modbus TCP field devices.
Online Commissioning and Diagnostic Check
Access the diagnostic view within Control Builder M or the 800xA system. Monitor communication status, real-time register values, connection counters and fault codes. Troubleshoot issues including link dropouts, timeouts or invalid register access. Verify bidirectional data consistency between the DCS and third-party Modbus devices. Tune the polling cycle to balance real-time performance and network load.
Redundancy Configuration (Optional)
If redundant communication is required, configure a dual-channel network or a redundant CI867K01 pair. Set up redundancy switchover logic and test the failover function to guarantee uninterrupted data transmission upon failure of one network path.
Backup and Acceptance
Export the project configuration file for backup purposes. Document communication parameters, register mapping tables and fault threshold settings. Execute an extended runtime test to confirm stable data exchange and complete factory acceptance.

FAQ about ABB CI867K01 3BSE043660R1
Q: What is ABB CI867K01 3BSE043660R1?
A: CI867K01, part number 3BSE043660R1, is an ABB AC800M PROFIBUS DP communication interface module, belonging to the ABB 800xA control system family. It serves as a fieldbus interface to connect the AC800M controller to PROFIBUS DP slave devices.
Q: What does CI867K01 stand for?
A: CI stands for Communication Interface; CI867K01 is the module type designation, and 3BSE043660R1 is the unique ABB order number for this unit.
Q: What industries use ABB CI867K01 3BSE043660R1?
A: Widely used in pulp & paper, power plants, oil & gas, water treatment, chemical processing, cement plants and manufacturing automation control systems.
Q: What is the main purpose of CI867K01 3BSE043660R1?
A: It enables data exchange between ABB AC800M controllers and PROFIBUS DP field devices such as remote I/O, drives, sensors and valve positioners.

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