Skip to content
PH Engineering Solutions Inc.

PLC & HMI Programming

We program the PLCs and HMIs that run your equipment, and we write the code to be maintained. Clear tag naming, commented routines, consistent structure, so the person troubleshooting it at 2am can follow what it does.

Fig. 01 · The HMI running: vacuum level, valve position, fault state

01What the work involves

  • New PLC and HMI programs for production equipment
  • Legacy system migration and controller upgrades
  • HMI screen design built around how operators actually work
  • SCADA and data collection with Ignition
  • Troubleshooting and recovery of code written by others

02Common questions

Which platforms do you program?

Allen-Bradley and Siemens are the bulk of our work, and Schneider is close to a third of it on its own. Omron and Mitsubishi after that. We're platform-neutral: we work on what you already run rather than pushing you toward one vendor.

Can you take over code somebody else wrote?

Regularly. A large share of our work is picking up systems another integrator left behind. See our recovery work for how we approach it.

Do we own the code?

Yes. You get the source, commented, along with the documentation. No locked files and no dependency on us to make a change.

03Proven on

On the floor
Custom HMI screen showing pump status, run timers and maintenance state
Fig. 02 · Custom HMI: pump status, run timers, maintenance state
Operator terminal running a PH-programmed vacuum and valve control screen
Fig. 03 · Operator terminal on a running line

Issue for construction

Have a plc & hmi programming project?

Send the drawings, the spec, or just a description of the problem. You'll get a straight answer on whether it's something we should be quoting.

Request a quoteWe fix failed installs