Control logic written for
the person fixing it at 2 AM.
Structured, documented PLC programs for Allen-Bradley, Siemens, and Beckhoff platforms — designed as control system architecture, not just code.
Logic written by whoever was available. No standards, no descriptions, no one who remembers why it works.
- —Generic tag names like "BIT_047"
- —Fault bit with no description
- —No documentation package
Consistent architecture, descriptive tags, and documentation your maintenance team can actually use.
- Descriptive tags and rung comments
- Fault messages with operator guidance
- Full as-built documentation package
Not just code,
control system design.
Every machine on your floor depends on PLC code. When it's written well, operators don't think about it — the system just works. When it's written poorly, your maintenance team spends their nights in front of a laptop trying to decipher logic that no one documented and no one else can follow.
We treat PLC programming as control system design — from I/O architecture and network topology through logic structure, alarm strategy, and operator interface philosophy. The PLC is the foundation. If the foundation is wrong, everything built on top — SCADA, MES, analytics — inherits the problem.
Every rung, every function block, every structured text routine is written with the person who troubleshoots it at 2 AM in mind.
Six engineering disciplines,
one integrated system.
PLC programs organized around a consistent, documented architecture. Add-On Instructions on Allen-Bradley and Function Blocks on Siemens create reusable, standardized logic modules. When the same valve control appears 40 times across your plant, it's one tested block deployed 40 times — not 40 variations written by three different people over five years. Naming conventions, tag structures, and program organization follow a standard established at project start and documented so your team can extend it.
Input/output point lists, module selection, rack layouts, and network architecture designed before the first line of code is written. Systems sized for the current scope plus a defined expansion margin. Remote I/O architectures on EtherNet/IP, PROFINET, and Modbus TCP for distributed systems. Point-to-point hardwired safety circuits and safety PLCs when the risk assessment requires it. Electrical and controls architecture designed together — because they're the same system.
Machine sequencing, state machines, and process control logic for discrete and continuous operations. Automatic, semi-automatic, and manual modes with clean transitions. Fault handling that tells the operator what went wrong and what to do about it — not just a generic fault bit and a red light. PID loop configuration, cascade control, ratio control, and feedforward strategies for process applications. Loops tuned on-site against actual process conditions.
Alarm management designed to ISA-18.2 principles. Alarm priorities, setpoints, deadbands, and shelving strategies defined during the design phase — not after commissioning when operators are already ignoring 200 nuisance alarms per shift. Every alarm should require operator action. If it doesn't require action, it's a status indicator, not an alarm. We rationalize alarm loads so operators see what matters and can respond before a trip.
Every project ships with a complete documentation package: functional design specification, I/O list, network architecture drawings, PLC program printouts with descriptions, and an alarm database. The documentation matches the as-built system — not the original design that changed twelve times during commissioning. We develop control system standards for facilities that need consistency across multiple lines, areas, or plants.
Migrations from PLC-5, SLC-500, and MicroLogix to current ControlLogix or CompactLogix hardware. RSLogix 500 to Studio 5000 conversion, addressing mode translation, and program restructuring. S7-300 and S7-400 migrations to S7-1500 in TIA Portal, including PROFIBUS to PROFINET network migration. Conversion utilities get you 70% of the way — the remaining 30% is where the actual engineering happens.
Every industry
that runs on machines.
If a machine or process is controlled by a PLC — or should be — we can design, program, and commission it.
Discrete Manufacturing
Assembly lines, machine cells, material handling, and packaging lines where precise sequencing and coordination matter. State machine logic, fault handling, and operator interfaces designed for the people running the line.
Process Industries
Chemical, pharmaceutical, food and beverage, and water/wastewater applications requiring continuous control, batch management, and regulatory compliance. PID strategies designed around your actual process behavior.
OEM Machine Builders
Controls packages for standard and custom machines, designed for repeatability across multiple builds with documented standards and version control. Code your customers can maintain without calling you.
Retrofit and Modernization
Replacing obsolete controllers in running facilities where downtime must be minimized and cutover risk managed carefully. Phased migration strategies that keep production running through the transition.
Greenfield Projects
New facility builds where the control system architecture is designed from the ground up alongside electrical, mechanical, and process engineering. Architecture decisions made once, correctly, before construction begins.
Multi-Site Standardization
Control system standards, naming conventions, and program templates for organizations running the same process across multiple facilities. One standard your internal team and future integrators can follow without a phone call.
From specification
to commissioned system.
Define the control requirements.
We start with a functional specification — not a quote. What does the system control? What are the modes of operation? What are the fault conditions? What does the operator need to see and do? This document is reviewed and approved before programming begins. It prevents scope creep, misaligned expectations, and the 'that's not what we meant' conversation during commissioning.
Design the architecture.
Hardware selection, I/O architecture, network topology, safety system design, and program structure. This is where decisions about controller platform, remote I/O layout, safety integration, and expansion capacity are made. The architecture drawing becomes the reference document for the rest of the project.
Develop and test.
PLC programming, simulation testing, and internal code review. We test logic against the functional specification using I/O simulation before any hardware is connected. For complex sequences, we build simulation environments that exercise the logic through normal operation, fault conditions, and mode transitions.
Factory Acceptance Test (FAT).
Testing the complete control system — PLCs, HMIs, network hardware, and panel assemblies — in our shop or yours before it ships to site. Witnessed FATs with your operations and maintenance teams give everyone confidence before the system arrives on the floor.
Commission and support.
On-site I/O checkout, device commissioning, loop tuning, sequence testing, and operator training. We stay through startup and initial production runs. Post-commissioning support — remote and on-site — is available on retainer or project-based terms.
Platforms we program.
Platform selection depends on your installed base, regional support availability, and application requirements — not our preference.
Engineering discipline,
not just programming.
Code your team can maintain.
The test of good PLC code isn't whether the programmer understands it — it's whether your maintenance technician can troubleshoot it during a night shift six months after the programmer left. Descriptive tag names, consistent structure, documented logic, and standard patterns that are predictable across the entire program. No clever shortcuts that save the programmer ten minutes and cost your maintenance team two hours on every call.
Design and programming under one roof.
We don't separate electrical design from PLC programming. The same engineers who design the I/O architecture, select the hardware, and lay out the panel also write the control logic. This eliminates the translation errors, mismatched assumptions, and finger-pointing that happen when the design team and the programming team are different companies.
We commission what we build.
The engineers who write your PLC program are the same engineers who commission it on your floor. They see the consequences of their design decisions in real time. That feedback loop — from code to commissioning to production — is what produces code that works in the real world, not just in simulation.
Standards that outlast the project.
We develop naming conventions, program structures, HMI templates, and alarm philosophies that your team can follow on the next project without calling us. For multi-site organizations, a consistent standard means any qualified engineer can open any program and understand it — regardless of who wrote it or when.
Straight answers.
It depends on your installed base, your team's familiarity, regional support availability, and the application requirements. If your plant is 90% Allen-Bradley, adding a Siemens PLC because it's technically superior for one application creates a maintenance problem. We help you make this decision based on total cost of ownership, not spec sheet comparisons.
Every rung and block includes descriptions. Tag names are descriptive and follow a documented convention. The program structure is organized logically with a table of contents. We deliver a documentation package that includes the functional specification, I/O list, network drawings, and annotated program printouts. Your maintenance team should be able to open the program and understand what it does without calling us.
Yes. We regularly take over programs written by other integrators, OEMs, or in-house teams. We assess the existing code, document what we find, and recommend whether to modify, restructure, or rewrite based on the scope of changes needed and the long-term maintainability of the existing structure.
It varies widely based on I/O count, logic complexity, number of devices, and integration requirements. A standalone machine with 50 I/O points is a different scope than a plant-wide system with 5,000 points and MES integration. We provide fixed-price proposals based on a defined scope, or time-and-materials for projects where the scope will evolve.
Yes. Remote support, on-call troubleshooting, and on-site service are available on retainer or per-incident terms. We also offer periodic system audits to review alarm loads, optimize control loops, and identify opportunities for improvement.
Every program revision is saved with a version identifier, date, and description of changes. For facilities with formal change management processes, we work within your MOC procedures — submitting change requests, documenting the engineering basis, and maintaining audit trails. Program backups are verified and stored per your retention requirements.
Need controls engineering?
Whether it's a new system, a legacy migration, or a program that needs to be restructured and documented — tell us about the project.