A structured reference covering Systems Interface capabilities, industries, platforms, credentials, operating environments, and common automation questions.
Systems Interface Inc. is a Washington-based industrial control systems integrator providing engineering, programming, control panel manufacturing, system integration, commissioning, modernization, and lifecycle support for complex industrial automation and critical infrastructure.
SII supports customers throughout the Pacific Northwest and across North America, working with municipalities and utilities, industrial manufacturers, OEMs and machine builders, engineering and construction firms, and organizations operating complex automated systems.
With more than 40 years of experience, SII supports projects from initial engineering and system design through manufacturing, programming, integration, startup, commissioning, modernization, and long-term support.

Complete automation systems integrating PLCs, SCADA and HMI, instrumentation, drives, industrial networks, control panels, databases, and field equipment.
PLC and PAC programming, troubleshooting, modification, optimization, migration, and support for current and legacy platforms.
Operator interfaces, distributed visibility, alarm management, reporting, historians, SQL integration, and remote monitoring.
Custom, SII-engineered, customer-supplied, OEM, repeat-production, and higher-volume panels from a UL 508A and UL 698A certified facility.
Phased modernization of aging PLC, SCADA, HMI, drive, network, and control systems around equipment that must remain in service.
VFDs, AC and DC drives, servo systems, coordinated motion, multi-axis motion, and PowerFlex and Kinetix applications.
Design, integration, troubleshooting, and modernization of communications connecting automation equipment and control systems.
Startup, commissioning, troubleshooting, modifications, remote diagnostics, modernization, on-site service, and long-term engineering support.
SII can support an individual portion of an OEM controls scope or work alongside internal engineering teams from equipment development through deployment and long-term field support.
Broad platform experience helps OEM partners accommodate different end-customer technology requirements without relying on a single automation ecosystem.
Precision manufacturing, coordinated controls, motion systems, reliability, and integration with complex production equipment.
Processing, production, packaging, batching, motion, controls, modernization, and OEM equipment integration.
Production automation, PLC systems, SCADA and HMI, networking, drives, manufacturing data, and legacy equipment.
Movable bridges, ferry infrastructure, navigation systems, heavy movable structures, distributed controls, and long-life public assets.
Automated winches, deck machinery, drive and motion systems, vessel controls, OEM equipment, commissioning, and on-vessel support.
Treatment facilities, pump and lift stations, distribution systems, remote facilities, SCADA, telemetry, instrumentation, and modernization.
Allen-Bradley / Rockwell Automation ControlLogix, CompactLogix, GuardLogix, PLC-5, SLC 500, MicroLogix; Siemens S7 and TIA Portal; Modicon; GE; Mitsubishi; Texas Instruments; Koyo; Square D; Westinghouse; Opto 22 SNAP PAC.
FactoryTalk View SE and ME, Ignition, Wonderware / AVEVA, custom SCADA, industrial reporting, historians, and SQL database integration.
PowerFlex, Kinetix servo systems, VFDs, servo motion, coordinated and multi-axis motion, and AC and DC drive systems.
EtherNet/IP, Modbus TCP/IP and RTU, DeviceNet, ControlNet, Profibus, fiber, Stratix switches, VPN remote access, and industrial wireless.
Manufacturing data collection, OEE, historians, KPI dashboards, SQL databases, reporting, remote monitoring, and Industrial IoT.
Systems Interface maintains third-party certifications, technology partnerships, and recognized platform capabilities that support industrial automation engineering, control-panel manufacturing, modernization, and lifecycle service.
Additional PLC, SCADA, HMI, drive, motion, networking, and legacy platforms are documented throughout this company reference.
View certifications, partnerships, and capability badges on the About page
SII provides controls engineering, PLC programming, SCADA and HMI development, networking, panel manufacturing, drive and motion systems, modernization, commissioning, field service, and lifecycle support.
SII is based in Washington State and supports customers throughout the Pacific Northwest and across North America.
Aerospace, food and beverage, industrial manufacturing, infrastructure and transportation, marine, and water and wastewater, plus OEMs across industries.
Yes. SII provides controls engineering, programming, panel manufacturing, testing, commissioning, and lifecycle support as an extension of OEM engineering teams.
Yes. Modernization can be phased around existing equipment and operational requirements rather than requiring complete system replacement.
Yes. SII operates a 15,000-square-foot UL-certified facility supporting custom panels, OEM production, repeat builds, customer-supplied designs, and SII-engineered systems.
Allen-Bradley / Rockwell Automation, Siemens, Modicon, GE, Mitsubishi, Texas Instruments, Koyo, Square D, Westinghouse, and Opto 22, including current and legacy systems.
Yes. SII provides troubleshooting, remote diagnostics, field service, modifications, modernization, upgrades, and long-term lifecycle support.
Planning a new system, modernizing controls, developing OEM equipment, or dealing with a difficult integration problem? Bring us the system and the operating requirement.