ABB CI840, CI840A Profibus DP Master Interface Module
Enhance your ABB AC 800M automation system with the ABB CI840 and CI840A Profibus DP Master Interface Modules (3BSE022457R1 / 3BSE041882R1) for reliable, high-speed industrial communication and network integration.
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ABB CI840, CI840A Profibus DP Master Interface Module
The ABB CI840 and CI840A are robust Profibus DP master interface modules engineered specifically for the ABB AC 800M controller system. These communication modules facilitate high-speed, reliable industrial data exchange, allowing for seamless integration of field devices, motor drives, and distributed I/O stations over the Profibus DP protocol. Encased in a durable PC+ABS housing, both models are equipped with intuitive front-panel status LEDs—including Fault (F), Run (R), Power (P), Rx/Tx, PRIM, and DUAL—to provide real-time operational diagnostics and streamline system troubleshooting. Available under order numbers 3BSE022457R1 (CI840) and 3BSE041882R1 (CI840A), these modules are essential for ensuring optimal connectivity, redundancy, and performance in your mission-critical automation networks.
Technical Specifications:
- Brand: ABB
- Model: CI840, CI840A
- Order Numbers: 3BSE022457R1 (CI840), 3BSE041882R1 (CI840A)
- System Compatibility: ABB AC 800M Controller System
- Communication Protocol: Profibus DP (Master Interface)
- Diagnostic LEDs: Fault (F), Run (R), Power (P), Rx/Tx, PRIM, and DUAL
- Housing Material: PC+ABS (Polycarbonate/Acrylonitrile Butadiene Styrene)

| Brand | ABB |
|---|---|
| Model | CI840, CI840A |
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ENERAL DELIVERY INFORMATION
Orders will be processed and shipping during standard working hours (0830 – 1700 GMT+8) Monday to Friday (excluding Bank Holidays)
On rare occasions, your order may be handled and/or processed on a Saturday. However, we are unable to ship items on weekends, therefore any orders dealt with on the weekend will be send out the next following working day.
The cut-off point for orders to be shipped the same day is 14:00 – please contact us to confirm stock levels before placing your order
Any orders placed after the cut-off will ship the next working day assuming all parts are in stock and ready for dispatch.
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- must be paid for in full before any goods are dispatched
- require a signature upon delivery. Please ensure delivery can be made to an address where someone will be available to sign for the delivery
- are packaged with great care, ensuring your order and the contents it contains, makes it safely through the delivery network

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