Understand. Debug. Optimize.Build Smarter.

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.

Modbus 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.

Cellular 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.

How Gateway Data Moves

Watch a reading travel from gateway to server — POST + JSON vs GET + CSV, status codes, timeouts and store & forward, fully animated.

Gateway LED Patterns

Play every front-panel blink pattern live — PWR, GSM / CON, TXD, RXD — and diagnose network, Modbus and SIM faults in seconds.

How 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.

Put 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.

How Store & Forward Works

What happens to readings when the link drops — buffering, flush order and batch limits.

JIO 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.

How 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.

Modbus 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.

RS-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.

RS-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.