Modbus Explorer vs Modbus 40001

Modbus Explorer helps automation engineers, field technicians, and maintenance teams discover and diagnose Modbus TCP devices on local industrial networks. Scan your network to find Modbus TCP devices, identify available device information, review open ports, and inspect communication health from one place. Key features: • Fast Modbus TCP device discovery • Device identification where supported • Open port overview • OSI-based diagnostics for physical, network, transport, and application layers • UID scan for Modbus TCP devices • Modbus read/write request tools • Network statistics including ping, jitter, packet loss, and response timing • Modbus TCP performance testing • Communication dashboard per device • PDF and CSV diagnostic reports • Optional engineer, company, and logo information for professional reports • Live Modbus HMI dashboard with configurable register cards • Saved networks with persistent HMI cards and PDF/CSV reports Modbus Explorer is designed for real industrial troubleshooting scenarios involving PLCs, HMIs, drives, gateways, and other Modbus TCP equipment. Whether you are commissioning a new panel, checking a device on site, documenting a network, or diagnosing communication issues, Modbus Explorer gives you a practical toolset for understanding what is happening on the wire. Some device identification and diagnostic information depends on the target device configuration and supported Modbus services. Türkçe | Deutsch | English | Français | Italiano | Español | Português | Русский | Azərbaycanca | 中文 | 日本語.

Modbus 40001 is a Modbus/TCP master for testing and commissioning industrial equipment — PLCs, drives, meters, and controllers — from an iPhone or iPad. Enter a device's IP address and port, choose a function code, and continuously poll a block of coils or registers of any size. Values update live, changed cells flash as they move, and holding registers and coils can be written back with a tap. FEATURES • Function codes 01–04 — Coil Status, Input Status, Holding Register, Input Register • Any block size — set the start address and length, checked against the protocol limits for each function • Poll rates from 100 ms to 5 seconds • Value notations — unsigned and signed decimal, hex, binary, 32-bit long, Float32 and 64-bit double in both word orders • Character notations — ASCII in either byte order, plus a low-byte form, with a joined readout so device names and serial numbers read as text • Writes — tap a cell to send Preset Single Register (06) or Force Single Coil (05) • Multiple scan documents — save several register blocks per device and switch between them • Addressing toggle — 1-based (PLC style) or 0-based (raw protocol), so off-by-one confusion is a single tap away from being resolved • Traffic view — every frame in and out as bracketed hex, with capture and clear • Status strip — polls, valid responses, errors, success rate, latency, and last update time • Built-in demo device — try every screen without hardware on the bench • Designed for both orientations — iPad keeps a two-column layout, iPhone scrolls the whole page No accounts, no analytics, no advertising. Device addresses and scan settings are stored only on your device. Intended for general testing of the Modbus/TCP protocol. Not certified for safety-critical use.