PLC Data to MQTT
Passive methods to stream PLC tags to MQTT brokers and cloud platforms without touching ladder logic or stopping the line.

Selection guides, head-to-head comparisons, and field-tested configuration notes for control engineers, integrators, and maintenance teams.
Passive methods to stream PLC tags to MQTT brokers and cloud platforms without touching ladder logic or stopping the line.

Two generators in duty-standby means one engine accumulates all the hours while the other sits idle. Duty cycling alternates lead-lag weekly, equalizing runtime.
Passive methods to stream PLC tags to MQTT brokers and cloud platforms without touching ladder logic or stopping the line.
Modbus RTU devices speak RS-485, not Ethernet. A protocol gateway bridges the gap. When a simple serial-to-Ethernet converter works and when an edge device with store-and-forward buffering is the safer choice for legacy networks.
The fan is the only moving part in an industrial PC and the component most likely to fail first. Fanless PCs eliminate this failure point but limit processor TDP.
Conductive sensors need conductive liquids. Capacitive sensors work with any liquid but are coating-sensitive. Ultrasonic sensors are non-contact but blinded by foam and vapor.
A practical comparison of cable-pull and push-button E-Stops for conveyor safety — when each device type is appropriate, cable tensioning requirements, false trip risks, and how to combine both on long belt installations.
Pneumatic actuation delivers simple open-close with no mid-stroke positioning at low cost. Electric servo actuation provides programmable pin position, velocity, and acceleration.
Frame size sets torque density, winding type shapes the speed-torque curve, and feedback resolution determines positioning accuracy.
An ATG sensor in ATEX Zone 0 requires IS wiring, armored cable, and barriers — cost dominated by the cable run, not the sensor. A wireless ATEX-certified radar gauge eliminates the cable entirely, deployable in days instead of weeks.
The VersaMax Micro family spans multiple CPU tiers, I/O counts, and comm options — from a 14-point relay unit for a pump panel to a 64-point Ethernet controller for a packaging module.