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Engineering knowledge, practical guides and interactive resources to help you learn, design, integrate and deploy industrial IoT solutions with confidence.
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14 guides and tools, all free
Free Windows software from our engineering team — no licence, no trial.
WIMNET Modbus Scanner
Native Windows Modbus master, rebuilt in C++ / Qt 6 — a 12 MB download that opens in under a second, needs no admin rights and has no licence or trial.
Version 2.0 · real screenshotAnimated, hands-on guides and browser tools — they run right here, with nothing to install.
4–20 mA Loop Explorer
Drive a live current loop — set the tank level and the supply, feel the compliance limit, cut the wire, and see exactly how a 2-wire sensor wires to the gateway.
Open the tool — runs in your browserAvailableModbus Hex Converter
Paste hex from any meter or PLC — decode Int, UInt and Float in ABCD / BADC / CDAB / DCBA, verify CRC-16 and encode values back to register bytes.
Open the tool — runs in your browserAvailableCellular Bands by Country
The 3GPP LTE and 5G NR bands deployed by network operators in any country — per operator, with band numbers and MHz, plus legacy 2G/3G. Specify the right band variant for a 4G/5G gateway.
Open the tool — runs in your browserAvailableHow Gateway Data Moves
Watch a reading travel from gateway to server — POST + JSON vs GET + CSV, status codes, timeouts and store & forward, fully animated.
Open the guideAvailableGateway LED Patterns
Play every front-panel blink pattern live — PWR, GSM / CON, TXD, RXD — and diagnose network, Modbus and SIM faults in seconds.
Open the guideAvailableHow the WT460M Talks to SCADA
Polling, two servers on any mix of HTTP, MQTT and TCP, transparent mode and an Ethernet-to-4G failover with TLS — watch every frame move, step by step.
Open the guideAvailableRO Purifier Controller
The WT401R, a customized IoT-enabled RO purifier controller: valves, pump, UV, two TDS probes, flow meter and a 3-digit display, reporting over 4G. Open the tap and watch it react.
Open the guideAvailablePut Your Gateway on the Right Network
Wrong series, DHCP, DNS and a static address that never clashes — the five checks behind most “no connection” calls, with a live address checker.
Open the guideAvailableHow Store & Forward Works
What happens to readings when the link drops — buffering, flush order and batch limits.
Open the guideAvailableJIO 4G Switching
A new Jio SIM that never attaches in a 4G gateway but works instantly in a phone — the field procedure, what to rule out first, and why Jio behaves unlike any other Indian operator.
Open the guideAvailableHow Modbus RTU Works
Watch a master poll a meter, VFD and sensor live over RS-485, then learn the register types, function codes and bus rules.
Open the guideAvailableModbus RTU vs TCP
Same registers, different wire — frame anatomy side by side, one-master vs many-clients, and how to bridge the two without touching your devices.
Open the guideAvailableRS-485 Wiring Guide
Daisy-chain, terminate, bias, ground — why the differential pair beats noise, where the 120 Ω really goes, and the six classic dead-bus mistakes.
Open the guideAvailableRS-232 vs RS-422 vs RS-485
Three serial ports, three jobs — one wire vs the differential pair, who may talk on each, the 15 m vs 1200 m distance race, and where each belongs.
Open the guideNothing matches yet. Ask our engineers— the next guide is usually written from a question like yours.
Three short paths through the guides above, in the order an engineer usually needs them.
New to Modbus
From the first poll to decoding a float
Commissioning a gateway
The checks behind most ‘no data’ calls
Choosing the hardware
From the site to the model number
Each application page animates the gateway step by step — what it reads, when it texts, what reaches your server.
