1VCF750079801 ABB | Com Modbus (RS485)
Description
1VCF750079801 ABB Com Modbus (RS485) is an industrial communication interface module designed to enable reliable Modbus RTU communication over RS485 between ABB industrial devices and master control systems like PLCs, supporting remote parameter configuration, status monitoring, and data exchange for industrial automation applications.
| Specification | Value |
|---|---|
| Communication Protocol | Modbus RTU (compatible with ABB Drives Profile) |
| Physical Interface | RS485 (half-duplex differential signal, screw terminals) |
| Data Transmission Rate | 1200bps to 19200bps (software configurable) |
| Data Format | 8 data bits, 1 stop bit; no/odd/even parity optional |
| Maximum Transmission Distance | 1200 meters at 9600bps (using shielded twisted pair) |
| Maximum Node Count | 32 devices (expandable with repeaters) |
| Communication Address Range | 0 to 247 (configurable via software) |
| Operating Temperature | -10 to 50 degrees Celsius |
| Isolation Voltage | 2500V AC (1 minute, input-output) |
| Power Supply | DC 24V (powered by connected device) |
Key Features:
- High anti-electromagnetic interference via RS485 differential signal transmission
- Supports multiple Modbus function codes including 0x06 (write single register) and 0x03 (read multiple registers)
- Built-in CRC and parity error detection for reliable data transfer
- 256-byte receive/transmit buffers to prevent data loss
- Configurable via ABB Drive Composer software
- Requires 120 ohm terminal resistor for long-distance communication to prevent signal reflection
Applications:
- Remote monitoring and control of ABB ACS510, ACS800, and ACS850 series inverters
- Data exchange between ABB robots and external PLCs or servo drives
- Centralized control of multiple industrial devices in manufacturing lines
- Integration of ABB equipment into broader industrial automation systems
Related Models:
- FSCA-01 (RS485 adapter module for ACS800/ACS850)
- CI840A (PROFIBUS DP communication module for AC 800M controllers)
- ABB ACS510 Modbus-enabled inverter