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Modbus Configuration on ABB Totalflow

By NFM Consulting 1 min read

Key Takeaway

How to configure Modbus RTU and TCP on ABB Totalflow — master for GC/instrument polling, slave for SCADA access, and register mapping.

Quick Answer

Totalflow supports Modbus RTU master (polling GCs, analyzers, ultrasonic meters), Modbus RTU slave (serving data to SCADA), and Modbus TCP server (Ethernet SCADA integration). Configure in PCCU32 Communications section.

Modbus Master

The primary use of Modbus master on Totalflow is polling gas chromatographs and ultrasonic meter electronics. Configure slave address, register range, poll rate, and data type mapping.

Modbus Slave/TCP Server

Expose Totalflow registers to SCADA masters via Modbus. Register addresses are documented in ABB's register reference manual. Ignition and Geo SCADA can poll Totalflow via Modbus TCP.

Register Mapping

Flow rates, pressures, temperatures, and accumulated volumes are accessible at specific register addresses. The register map varies by device model and firmware — refer to the ABB Totalflow Register Reference Manual.

Frequently Asked Questions

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