ABB CI855K01 3BSE018106R1 Interface Module

Series Affiliation: Communication Interface Module of ABB AC 800M control system.

Functional Overview: Connects industrial fieldbuses or third-party communication networks to enable data interaction between PLC and external devices, serving as a key component for system integration.

Mainstream Fieldbuses:

Communication Interfaces:

Protocol Conversion Capability: Achieves data format conversion between different protocols (e.g., PROFIBUS to Modbus), simplifying system integration complexity.

Data Processing Capacity: Supports real-time data refresh (cycle ≤1ms) to meet the needs of high-speed control scenarios.

Node Capacity: Up to 126 slave devices in PROFIBUS master mode; Modbus supports up to 247 slaves.

Electrical Characteristics: Communication interfaces with optoelectronic isolation (isolation voltage ≥500VAC), strong anti-electromagnetic interference capability.

Mechanical Structure: Standard 35mm rail mounting, supporting hot-swapping (requires use with AC 800M rack) for easy maintenance and replacement.

Status Indication: Built-in LED indicators (e.g., POWER, COM, ERROR, BUS ACTIVE) for real-time display of module operating status.

PROFIBUS Communication Process:

Modbus Communication Process:
Sends Modbus protocol frames (e.g., 03H read register, 06H write register) via RS-485 interface for point-to-point/multipoint communication with instruments or devices, supporting CRC check to ensure data integrity.

Backplane Bus Communication: Connects to the CPU module via the VME bus of the AC 800M rack, mapping external device data to the input/output image area of the PLC.

Data Mapping Mechanism: Users can configure communication parameters (e.g., slave address, data start address, transmission cycle) in ABB Control Builder software to define the correspondence between external data and PLC variables.

Monitors faults such as bus disconnection, parity error, and slave unresponsiveness in real time, alarms via LED, and sends fault codes to PLC (e.g., error code 0x10 indicates PROFIBUS physical layer abnormality).

Manufacturing Production Line Integration: Connects PROFIBUS-compatible servo drives and encoders to enable real-time interaction between motion control data and PLC.

Process Automation Monitoring: Connects intelligent instruments (e.g., temperature transmitters, flowmeters) via Modbus to collect on-site process parameters and upload them to the DCS system.

Retrofit of Old Equipment: Serves as a protocol converter to connect traditional Modbus devices to PROFIBUS networks, avoiding overall system upgrade costs.