Siemens S7-300 Legacy PLC Controls Specialist

Valknut Inc

  • Greer, SC
  • 2 days ago

    Highlights

    Each day, you’ll connect with legacy Siemens S7-300 racks, open SIMATIC STEP 7 (Classic, v5.x), and dive into live logic to keep production moving for a customer near our Greer, SC office. Attach to S7-300 controllers and evaluate ladder/FB/FC logic; adjust and optimize code in STEP 7 (v5.x) to stabilize operations.

    Numbers & Facts

    LocationGreer, SC

    Description

    About the Role

    Step into a hands-on role focused on established Siemens automation. Each day, you’ll connect with legacy Siemens S7-300 racks, open SIMATIC STEP 7 (Classic, v5.x), and dive into live logic to keep production moving for a customer near our Greer, SC office.

    A Day in the Life

    • Attach to S7-300 controllers and evaluate ladder/FB/FC logic; adjust and optimize code in STEP 7 (v5.x) to stabilize operations.
    • Chase down I/O anomalies and recover sequences; pinpoint and resolve communication issues across PROFIBUS-DP and PROFINET networks.
    • Partner on the production floor to implement real-time changes, support line recoveries, and execute targeted process improvements.
    • Read electrical schematics to trace signals, validate wiring, and remedy hardware-related control issues.

    What You Bring

    • Direct, proven experience programming and troubleshooting Siemens S7-300 with SIMATIC STEP 7 (Classic).
    • Strong grasp of industrial communications, especially PROFIBUS-DP and PROFINET topologies and diagnostics.
    • Calm under pressure—able to diagnose downtime rapidly and implement safe, effective logic changes on the spot.
    • Comfort with electrical/electronic systems, industrial power and controls, and field service readiness.

    Location Requirement

    This is an on-site role supporting a customer local to our Greer, SC office. Candidates must live within daily commuting distance. Travel/per diem is not available.

    Core Proficiencies

    • PLC troubleshooting and programming (Siemens)
    • Troubleshooting automated machinery and industrial equipment
    • Electrical/electronic and industrial electrical systems
    • Field service readiness and shop-floor collaboration

    Tools and Technologies

    • Programmable Logic Controller (PLC) (Siemens)

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