PLEXUS is the engineering platform built for the automation engineer standing next to the panel. Connect any PLC, manage programs, catch bugs with intelligent analysis, and automate backups — all in one place.
6+
PLC Brands
8
Protocols
10+
Lint Rules
100%
ISA-5.1
Purpose-built for automation engineers. From PLC connection to code management and intelligent linting.
Connect to any PLC brand in under 2 minutes — Allen-Bradley, Siemens, Omron, Mitsubishi, Schneider, Beckhoff. No protocol knowledge required.
Centralised repository for all PLC programs with version history, syntax highlighting, and instant download.
10+ static analysis rules catch duplicate coils, missing E-Stops, dead rungs, and timer resets — with Plexus Intelligence plain-English explanations.
ISA-5.1 compliant tag library with CSV import/export, intelligent auto-descriptions, and full modification history.
Map every device on your plant network with automatic subnet grouping and IP conflict detection.
Daily automated backups of all PLC programs, tags, and configuration — with one-click restore.
PLEXUS is the industrial automation platform built at plexus-plc.com for automation engineers, system integrators, and controls technicians. Connect to any PLC brand — Allen-Bradley ControlLogix and CompactLogix via EtherNet/IP, Siemens S7-300/S7-400/S7-1200/S7-1500 via S7comm, Schneider Modicon via Modbus TCP, any OPC-UA server, Omron CJ/CS series via FINS, and Mitsubishi MELSEC via MC Protocol.
The PLEXUS Code Vault stores Ladder Logic, Structured Text, Function Block Diagram, and Sequential Function Chart programs in an AES-256-GCM encrypted repository. The AI-powered PLC linter checks for IEC 61131-3 violations, duplicate output coils, missing emergency-stop conditions, dead rungs, unreset timers, and off-scan outputs — with plain-English fix suggestions.
Build ISA-5.1 compliant P&ID screens with the PLEXUS SCADA/HMI canvas. Live tag values from connected PLCs animate directly on the screen. The historian captures time-series data for every monitored tag. The ISA-18.2 alarm manager handles shelving, acknowledgement, and escalation — including automated pg_cron server-side expiry so alarms are never silenced by a disconnected browser.
EtherNet/IP
Allen-Bradley
Siemens S7comm
S7-1200/1500
Modbus TCP
Schneider · Any
OPC-UA
Universal
Omron FINS
CJ / CS Series
Mitsubishi MC
MELSEC Series
Join engineering teams worldwide who are automating their PLC management with PLEXUS.