PLC Programming & Industrial Automation
Southern California
A PLC failure or undocumented control system can shut down an entire production line — and most facilities don't have a backup or anyone who knows the code. Direct Source provides PLC programming, HMI development, VFD configuration, and full industrial automation and controls support for manufacturers, food processors, and industrial facilities throughout Southern California. We troubleshoot what others can't, and document what your facility depends on.
Call (562) 396-9924Request PLC & Automation Support
Describe your system or issue — we respond within one business day. Emergency? Call (562) 396-9924.
Trusted by industry leaders
Direct Source serves Southern California’s top manufacturers
What We Do
PLC & Automation Services We Deliver
From emergency PLC troubleshooting and program recovery to full automation system design and commissioning — across all major platforms.
PLC Programming & Troubleshooting
Allen-Bradley (Logix, SLC, MicroLogix), Siemens (S7, TIA Portal), Omron, Mitsubishi, GE/Emerson — programming, modification, and fault diagnosis across all major platforms.
HMI Development
FactoryTalk, Ignition, Wonderware, PanelView, and custom HMI development — new screens, modifications, and migration to modern platforms.
VFD Configuration & Programming
Allen-Bradley PowerFlex, Siemens Sinamics, ABB, Danfoss, Yaskawa — parameter setup, tuning, startup, and troubleshooting for variable frequency drives.
Control Panel Design & Build
Custom control panel design, fabrication, and wiring — UL 508A industrial panels built to your specifications and integrated into your existing system.
System Integration & Commissioning
New automation system integration, equipment commissioning, and startup support — from conveyors and packaging lines to process control systems.
PLC Backup & Documentation
Program backup, documentation, and disaster recovery planning — so your facility isn't dependent on one person's knowledge or an undocumented system.
Industries Served
Who We Serve
We serve industrial facilities across Southern California in every major industry sector.
Food & Beverage
Packaging line PLCs, conveyor automation, cold storage controls, mixing and filling system programming, and SCADA for food processing facilities.
Distribution & Warehousing
Conveyor sortation controls, WMS integration, dock automation, barcode and vision system integration, and warehouse automation PLC work.
Oil & Gas
SCADA systems, wellhead automation, pump station controls, classified location PLC installations, and pipeline monitoring systems.
Manufacturing
CNC machine controls, press and stamping automation, robotic system integration, production line PLC programming, and MES connectivity.
Water & Wastewater
SCADA/HMI for pump stations, lift station controls, chemical dosing automation, and remote monitoring system development.
Aerospace & Defense
Test stand automation, precision motion control, data acquisition systems, and specialized control systems for aerospace manufacturing and test facilities.
What Clients Say
Trusted by City of Industry & Los Angeles County Manufacturers
“We were experiencing electrical and PLC problems at our manufacturing plant and needed help ASAP. Direct Source came in the same day, gave us a very fair estimate, found the problem, and fixed it. We got back up and running with little downtime. These guys know what they're doing.”
“We had an unexpected production issue at our facility in City of Industry and Direct Source responded quickly. Their industrial electrician team diagnosed the problem fast and got us back up and running the same day. Professional and dependable.”
“They were professional and prompt, diagnosed the issue quickly, and fixed it at no charge since it was an easy fix. That type of customer service goes a long way in showing how they operate. They will be our FIRST call for the next electrical need.”
Why Direct Source
Why Southern California Industrial Facilities Choose Us
Multi-Platform ExpertiseWe work across all major PLC platforms — Allen-Bradley, Siemens, Omron, Mitsubishi, GE/Emerson — so we're never limited by what brand your facility runs.
We Document What We TouchEvery program modification is documented and backed up. We leave your system better documented than we found it.
Production-Environment ExperienceWe understand that downtime costs money. We troubleshoot fast, communicate clearly, and work around your production schedule whenever possible.
Ongoing Support ContractsBeyond project work, we offer PLC/automation support retainers — priority response, scheduled program audits, and backup management for your control systems.
Get Started
Get a Quote for PLC & Automation Support
- Allen-Bradley, Siemens, Omron, Mitsubishi, and more
- Troubleshooting, programming, upgrades, and documentation
- New system integration and commissioning
Tell Us About Your Facility
Submit below — we respond within one business day.
PLC & Automation — Common Questions
What PLC platforms do you support?
Direct Source supports all major PLC platforms — Allen-Bradley (ControlLogix, CompactLogix, SLC 500, MicroLogix), Siemens (S7-1200, S7-1500, S7-300/400), Omron, Mitsubishi, GE/Emerson, and others. Call (562) 396-9924 to discuss your specific system.
Can you recover a PLC program with no backup?
In many cases, yes. We can often recover or reconstruct a PLC program from the processor itself, existing documentation, and knowledge of the process. Call us to discuss your specific situation.
Do you offer emergency PLC troubleshooting?
Yes. Production-down PLC and automation emergencies get priority response. Call (562) 396-9924 for emergency automation support in Southern California.
Do you design and build control panels?
Yes. Direct Source designs, builds, and wires custom UL 508A industrial control panels — integrated into your existing system or as part of a new automation project.
Ready to Talk to Direct Source?
We serve industrial facilities throughout Southern California. Call us or submit a request — we respond within one business day.