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Project Summary
UL Group recently accomplished a major milestone in industrial communication by enabling seamless data exchange between a Siemens PLC (PROFIBUS Controller) and a legacy Serial Display (RS-485), with the help of the Anybus ABC3000-A gateway.
This achievement demonstrates how modern gateways can unlock new levels of connectivity in brownfield environments, without the need for major hardware upgrades or custom coding.
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Integration Objective
To allow real-time process data from the PLC to be displayed on a legacy RS-485 serial display, ensuring operators on the floor get immediate visibility into critical parameters.
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System Architecture
PLC – Operating as the PROFIBUS-DP Master
Anybus ABC3000-A – Configured as a PROFIBUS-DP Slave and Serial Master
Serial Display – Communicating via RS-485 ASCII protocol
The Anybus device served as a protocol bridge, translating data from PROFIBUS to serial with minimal configuration and zero custom code.
Key Outcomes
Real-time process data displayed at the operator level
Improved plant floor visibility with no additional programming
Connected legacy RS-485 systems to modern PROFIBUS networks
Avoided expensive retrofitting or control system overhaul
Maintained industrial reliability and speed across protocols
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Why This Matters
In industries like manufacturing, sugar, and process automation, legacy devices are still in widespread use. This project proves how protocol converters like the Anybus ABC3000-A can extend the value of existing equipment — helping companies modernize incrementally, affordably, and efficiently.