Programmable Logic Controllers
Enicstra stocks programmable logic controllers (PLCs) for machine and process control, covering current-generation processors and a deep inventory of obsolete and discontinued legacy PLCs. The catalog includes compact, modular, and rack-based controllers from Allen-Bradley (SLC 500, PLC-5, MicroLogix, CompactLogix, ControlLogix), Siemens (S5, S7-200/300/400/1200/1500), Mitsubishi FX and Q-series, Omron CJ/CS/CP, Schneider Modicon, and GE Fanuc.
Sourcing obsolete PLCs is a primary focus — entire installed bases of older systems still depend on parts that the OEM no longer ships. Every CPU, power supply, and I/O module is bench-tested before leaving St. Louis and ships with a 12-month functional warranty.
For a specific legacy PLC part not listed, send the OEM number and a quote returns inside 1–2 business days.
Industrial gateways, protocol converters, and fieldbus couplers — bridge between PLC networks and devices.
Industrial displays — large LED scoreboards, andon boards, marquee message displays, and digital indicators.
PLC input modules and units — digital, analog, and special-signal input cards for PLC and remote I/O racks.
PLC processors, CPU modules, and I/O cards from major manufacturers — current and obsolete in stock.
Single-output regulated power supply units — 24 VDC, 12 VDC, 48 VDC for sensors, PLCs, and controls.
Programmable Logic Controllers
Can't Find The Part You Need?
Send us the part number, manufacturer, quantity, and condition — we'll locate it.