ABB 1VCF750079R801 Modbus RS485 Industrial COM Module

The ABB 1VCF750079R801 communication module delivers stable and efficient MODBUS RS485 connectivity for automation systems requiring reliable serial data exchange. Its compact design supports quick installation in tight control cabinets, and its engineered noise immunity ensures clean signal transmission in demanding industrial environments. Moreover, the module integrates smoothly with ABB controllers, drives, and third-party devices using Modbus RTU or ASCII protocols.

2. Functional Highlights and Key Benefits

• The ABB 1VCF750079R801 supports both Modbus RTU and ASCII communication standards for flexible system integration.

• Its galvanic isolation enhances signal stability and protects internal electronics from network disturbances.

• Moreover, the module supports long-distance RS485 communication up to 1200 meters using appropriate cabling.

• The compact housing enables DIN rail or panel installation, allowing efficient use of available cabinet space.

• Therefore, it provides a dependable communication interface for factories modernizing or expanding digital connectivity.

3. Technical Specifications

General Information

• Manufacturer: ABB

• Part Number: 1VCF750079R801

• Product Type: COM MODBUS (RS485) Communication Module

• Interface Type: RS485 Serial Interface

• Supported Protocols: Modbus RTU, ASCII

• Country of Origin: Sweden / Germany / USA

• Condition: Brand New with Original Package

Electrical & Communication Parameters

• Transmission Speed: Up to 115.2 kbps

• Bus Type: 2-wire or 4-wire RS485

• Communication Distance: Up to 1200 meters

• Isolation: Galvanic isolation between device and network

• Power Supply: 24 V DC ±10%

• Power Consumption: 3 W (typical)

Mechanical & Environmental

• Dimensions: 110 × 75 × 40 mm

• Net Weight: 280 g

• Mounting: DIN rail or panel

• Operating Temperature: –25 °C to +70 °C

• Protection Class: IP20 (when enclosed)

4. Typical Applications and Integration Scenarios

The ABB 1VCF750079R801 is widely used in distributed control systems, frequency drive networks, and process automation architectures that depend on reliable RS485 connectivity. In addition, engineers select this module for retrofitting older communication networks where Modbus remains an essential field protocol. For instance, the extended communication distance and strong noise immunity support stable fieldbus operation across large industrial plants.

5. Support, Maintenance, and Reliability

Technicians appreciate the module’s straightforward wiring layout, which speeds up installation and reduces commissioning time. Moreover, its robust electrical isolation protects the system during voltage disturbances, helping extend the service life of connected equipment. Therefore, the module provides a dependable communication link for businesses seeking reliable long-term automation performance.

6. FAQ

Q1: Is the ABB 1VCF750079R801 brand new and original?
Yes, the product is 100% new and original from ABB and arrives in sealed packaging.

Q2: Which communication standard does the module support?
It supports RS485 communication using Modbus RTU and Modbus ASCII protocols.

Q3: What type of isolation is included?
The module offers galvanic isolation to improve signal integrity and protect internal electronics.

Q4: What is the maximum communication distance?
The RS485 bus can reach up to 1200 meters, depending on cable quality and installation conditions.

Q5: How quickly can the module be shipped?
Stock is available, and orders ship within 3 days to 2 weeks, depending on quantity and logistics.