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PLC Control System Experts
for Machines & Production Lines

Design, programming, legacy migration and machine retrofit — plus control panel build and field installation by engineers with 30+ years of hands-on experience, with minimal downtime.

What is PLC control

The brain that runs your machines

PLC (Programmable Logic Controller) is the industrial controller that automates machines and production lines — accurately, reliably and safely. APY designs and programs PLC systems from a single machine to a full production line.

We do it all: logic design, programming, control panel assembly, field wiring, commissioning, and integration with SCADA/HMI and IIoT — in one accountable team.

Inside a recently fabricated PLC control panel — PLC modules, breakers, and standard-compliant wiring
Our Services

PLC control work we deliver

End-to-end — from consulting and design, to programming, panel build, installation, testing and long-term support.

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New PLC Development

Logic design and PLC programming tailored to your machines and process.

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Migration & Upgrades

Migrate legacy or unsupported PLCs to modern platforms with minimal production downtime.

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Machine Retrofit

Modernize existing machines with new PLC control for better performance and safety.

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Panel Build & Installation

Control panel assembly to standard, field wiring and on-site installation by our own team.

Commissioning

System testing, tuning and handover with documentation — minimal impact on production.

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SCADA / HMI / IIoT Integration

Integrate PLCs with SCADA, HMI and IIoT for complete monitoring and data.

Real Work

Panels & installations we delivered

Built and installed to standard, in our customers’ plants.

Finished PLC control panel with door-mounted HMI and tower light
Control PanelAssembled and wired to standard, with door-mounted HMI.
Terminal blocks with every wire labeled
Wiring & MarkingEvery wire labeled — easy to inspect and maintain.
Mitsubishi iQ-R PLC rack with breakers and power supplies inside a control panel
Panel InternalsPLC, breakers and power supplies, cleanly arranged.
Multiple PLC controller brands APY programs and installs
Controllers We Program

Every major brand covered

  • Siemens SIMATIC (S7-1500 / S7-1200 / S7-300 / S7-400) on TIA Portal
  • Mitsubishi MELSEC and Rockwell Allen-Bradley (Studio 5000)
  • Omron, Schneider Modicon and Delta
  • Servo, inverter/drive and Safety PLC
  • PLC parts sourcing — including obsolete/discontinued components
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We are not just an installer — we are control engineers who design logic, write code and solve problems on the plant floor. We are expert across leading PLC brands and recommend what truly fits your machines.

PLC Brands We Master

Program and maintain every major brand

Real-world experience programming and deploying control systems on these PLCs.

SIMATICSiemens
MELSECMitsubishi
Allen-BradleyRockwell
SysmacOmron
ModiconSchneider Electric
DeltaPLC / Drive
Proven Work

Control systems in leading plants

APY engineers installing a control panel on site Wiring and control system installation inside a panel

Reference projects (some client names withheld):

Rice Department — Mitsubishi PLC control with SCADA monitoring across 40+ sites nationwide

Agri-produce maker within CP Group — Siemens S7-1500 PLC control with SCADA across 2 plants

Multiple leading plants — control panel builds, electrical installation and machine retrofits

Why APY

Engineers who get hands-on

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Engineers, not salesmen

Founded and run by automation engineers with 30+ years on real plant floors.

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One accountable partner

Design, program, build, install, commission and support — all in one team.

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Local & responsive

A team in Thailand, ready on-site when you need us.

Have machines to control, or a PLC system to upgrade?

Tell us about your machines and plant — we’ll respond within one business day with practical next steps.

Free Consultation

Related reading

How to choose a PLC brandCase study: control panel renovation
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