Anonymous Korean Automotive Company Upgrades Control System to Improve Production

A Korean automotive manufacturer operating a fully integrated, state-of-the-art production facility faced mounting pressure from rapid technology shifts and growing consumer demand for vehicle customization. Its aging control system could not keep pace with accelerated platform refresh rates, increased product variability, or the need to converge IT and OT for real-time analytics. The paint shop in particular struggled to maintain process consistency and supply chain coordination. Tight production schedules ruled out extended shutdowns for upgrades, while incompatible software versions and OS dependencies added further risk. The status quo meant rising total costs, constrained flexibility, and a slower path to market.

The manufacturer selected Rockwell Automation's ControlLogix platform as its new control foundation. ControlLogix uses a common control engine and unified development environment, enabling tight integration between programming software, controllers, and I/O modules to reduce both development and commissioning time. RSView32 provided an integrated, component-based HMI for operator monitoring and process control, while the Studio 5000 environment consolidated engineering and design into a single framework. Migration was executed without an extended plant shutdown — Rockwell Automation planned a phased rollout commissioning each main conveyor panel individually during regular scheduled downtime, avoiding any disruption to production schedules. Local I/O was converted to remote I/O over a high-speed EtherNet/IP network, replacing the legacy DH+/RIO infrastructure.

The ControlLogix migration delivered measurable improvements across reliability, support, and operational efficiency:

• Troubleshooting time dropped from ~10 minutes to under 1 minute after switching from the legacy DH+/RIO network to high-speed Ethernet.
• Converting local I/O to remote I/O reduced field wiring complexity and lowered mean time to repair (MTTR).
• Standardizing on 1756-L71 controllers simplified spare parts inventory and improved inventory management.
• RSView32 enhanced fault monitoring and display, further contributing to MTTR reduction.
• The Studio 5000 environment optimized productivity and reduced commissioning time across the plant.

Local and remote support capabilities improved substantially, and operators gained the ability to update programs directly using ControlLogix's text-based file addressing system.

• Phased migration preserves uptime: commissioning panels individually during scheduled downtime avoids the production risk of a full-plant cutover — critical in high-volume automotive environments.
• Network modernization unlocks diagnostic speed: moving from legacy fieldbus (DH+/RIO) to EtherNet/IP can compress troubleshooting cycles by an order of magnitude.
• Platform standardization reduces hidden costs: consolidating controller SKUs simplifies spare parts, training, and long-term maintenance overhead.
• IT/OT convergence requires the control layer first: a unified, networked control platform is a prerequisite for real-time analytics and IIoT integration in complex manufacturing environments.
• HMI and controller co-design matters: tight integration between the HMI (RSView32) and controller (ControlLogix) directly reduces operator error and fault response time.