The gateway doesn't care what the equipment is — a slave ID, a register address, and a function code are enough. These are the applications engineers bring to us most often; each one shows a slice of the register map you would type into the console, and the values that land on your broker.
🏢
Building management & HVAC
Chillers, air handlers, VRF controllers, and floor-level meters already speak Modbus RTU. Publish their temperatures, setpoints, and run states to a BMS dashboard or analytics platform without paying per point.
Devices table → broker
FC3 40001 ×0.1 → supply_temp 18.4
FC3 40105 ×1 → setpoint 21
FC1 00034 → fan_run 1
return tempvalve positionchiller kWfloor kWh
🏭
Manufacturing & machine monitoring
Read cycle counters, machine states, drive speed, and load from the PLCs and VFDs already on the line. Poll fast for a responsive process and still publish a tidy update every 30 s to your OEE or downtime dashboard.
Devices table → broker
FC3 40020 ×1 → cycle_count 84213
FC3 40044 ×0.1 → vfd_hz 47.5
FC1 00009 → fault 0
reject counterspindle loadoven temprun hours
⚡
Energy & tenant submetering
Poll power meters across a site and publish kWh totals, voltage, current, and power factor in engineering units — the per-tag multiplier turns raw counts into billable figures before they ever leave the gateway.
Devices table → broker
FC3 30002 ×.01 → kwh_total 10432.75
FC3 30010 ×0.1 → volts_l1 231.4
FC3 30016 ×.01 → power_fact 0.98
current per phasedemand peakfrequencykVArh
💧
Water, wastewater & pump stations
Unmanned sites with flow meters, pressure and level transmitters, and pump starters. The 10,000-sample on-device log keeps the history intact through a cellular or broker outage, so remote doesn't mean blind.
Devices table → broker
FC4 30007 ×1 → flow_rate 18
FC3 40012 ×0.1 → tank_level 62.5
FC1 00003 → pump_run 1
flow totaliserline pressurepump run hoursmotor current
🌡️
Cold chain, food & pharma
Temperature and humidity controllers on refrigeration plant, drying rooms, and storage. Every reading is timestamped against the device's SNTP-synced clock, then published for alerting and long-term retention.
Devices table → broker
FC3 40001 ×0.1 → chamber_t -18.6
FC3 40003 ×0.1 → humidity 41.2
FC2 10005 → door_alarm 0
defrost stateevaporator tempcompressor runsetpoint deviation
☀️
Solar, storage & generators
String and hybrid inverters, battery management systems, and genset controllers all expose Modbus RTU. Feed DC and AC power, state of charge, fuel level, and alarm registers into an O&M portal over TLS.
Devices table → broker
FC3 40072 ×1 → dc_power 4820
FC3 40085 ×1 → soc 78
FC1 00021 → inv_fault 0
AC export kWstring voltagegenset fuel levelrun hours
Also deployed for
Data centre power chains (UPS, PDU, and CRAC units) · greenhouse and irrigation control · EV charger fleets · compressed air and process utilities · commercial laundry and kitchen equipment · marine and offshore auxiliaries · OEM machine builders adding cloud telemetry to an existing controller without touching its firmware.
Tell us which devices you need to read and we'll confirm the register map →
