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Phone：+86 15383419322Description
The ABB CI857K01 3BSE018144R1 is a high-performance Modbus TCP/RTU communication interface module for ABB’s AC 800M controller family, designed to bridge legacy industrial devices with modern DCS/PLC systems. This versatile gateway supports both Modbus TCP (Ethernet) and Modbus RTU (serial) protocols simultaneously, enabling seamless integration of third-party equipment into ABB’s 800xA and Symphony Plus control environments. As a critical component in brownfield modernization projects, the CI857K01 functions as either Modbus master or slave, handling up to 32 concurrent connections with deterministic response times <10ms. Its dual Ethernet ports (10/100 Mbps) with integrated switch support linear topologies without external hardware, while the RS-485 serial interface connects to legacy RTU networks. Engineered for mission-critical applications, the module features SIL 2 functional safety compliance, hot-swap capability, and -40°C to +70°C operating range, making it indispensable for power distribution, water treatment, and manufacturing facilities requiring robust protocol translation.
ABB CI857K01 3BSE018144R1
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | ABB CI857K01 3BSE018144R1 |
| Manufacturer | ABB |
| Product Type | Modbus TCP/RTU Gateway |
| Protocol Support | Modbus TCP (IEEE 1003.1), Modbus RTU (RS-485) |
| Ethernet Ports | 2x RJ45 (10/100 Mbps, auto-MDI/MDIX) |
| Serial Interface | 1x RS-485 (9-pin D-Sub, 115.2 kbps max) |
| Max Connections | 32 TCP clients/servers + 1 RTU network |
| Response Time | <10 ms (TCP), <20 ms (RTU) |
| Configuration | Control Builder M + Protocol Mapper |
| I/O Mapping | 2000 registers (input/output combined) |
| Power Supply | 5 VDC ±5% (backplane), 1.5W |
| Operating Temperature | -40°C to +70°C |
| Certifications | SIL 2 (IEC 61508), UL, CE, DNV GL |
| Redundancy | Hot standby (requires secondary module) |
| Security | TLS 1.2, Access Control Lists (ACL) |
| Firmware Update | Online via Control Builder M |
Main Features and Advantages
Dual-Protocol Engine: Simultaneously manages Modbus TCP Ethernet devices and Modbus RTU serial networks on a single module, eliminating separate gateways. Automatic baud rate detection simplifies RTU network integration.
Deterministic Performance: Achieves <10ms response times for critical SCADA applications using optimized protocol stack architecture. Time-stamped data logging supports audit trails for regulatory compliance.
Advanced Security: TLS encryption and configurable ACLs protect against unauthorized access. Role-based authentication integrates with 800xA system security.
Seamless Data Mapping: Drag-and-drop protocol mapper in Control Builder M converts Modbus registers to native AC 800M variables without custom coding, reducing engineering effort by 70%.
High Availability: Hot-swappable design enables replacement without controller reboot. Redundant CI857K01 pairs achieve <100ms failover for continuous operations.
Application Field
The ABB CI857K01 3BSE018144R1 solves interoperability challenges in hybrid control systems:
Power Distribution: Integrates legacy protective relays (Modbus RTU) with 800xA DCS for unified grid monitoring in substations
Water Management: Bridges pump station RTUs with modern SCADA using Modbus TCP while meeting SIL 2 safety requirements
Manufacturing: Connects CNC machines (Modbus TCP) to AC 800M controllers for real-time production tracking
Oil & Gas: Interfaces wellhead RTUs with central DCS in remote locations via satellite-modem TCP links
Marine: Unifies engine control systems (Modbus) with bridge navigation systems on DNV GL-certified vessels
ABB CI857K01 3BSE018144R1
Related Products
ABB CI858: Modbus TCP-only interface module for pure Ethernet environments
ABB PM865AK01: High-end processor for AC 800M controllers using CI857K01
ABB TA520: Ethernet terminator for network segmentation
ABB SD832: RS-485 repeater for extending serial networks
ABB S800 MB300: Modbus interface for distributed I/O systems
ABB 3BSE018105R1: Configuration backup unit
ABB CI854AK01: PROFIBUS slave module for hybrid protocol environments
ABB COM600: Gateway for cloud connectivity of Modbus data
Installation and Maintenance
Pre-installation preparation: Verify controller compatibility (PM865/PM891). Configure IP addresses and Modbus mapping in Control Builder M offline project. Install termination resistors for RS-485 networks. Enable TLS certificates for secure connections.
Maintenance recommendations: Monitor “Connection Health” diagnostics monthly. Update firmware during planned outages. For replacement: Deactivate redundancy pair, extract module, insert new CI857K01 within 60 seconds. Clean serial ports annually with contact cleaner. Verify ACL rules quarterly against cybersecurity policies.
