BaudHub: Modbus Assistant

RTU/TCP Serial Debugger

Only for Mac

Free · In‑App Purchases

Mac

Get Lifetime Pro FREE for Life! (Claim Oct. 20 – Oct. 27). Supports Modbus RTU, Modbus TCP, RTU over TCP and a serial terminal. BaudHub: Connect devices. Find the problem. Save the data. A native Mac Modbus tool for field engineers: install, commission, inspect and troubleshoot equipment, check results and take records back to the office. Connect for the job; disconnect when done. Supports Modbus RTU, Modbus TCP, RTU over TCP and a serial terminal. Less setup, less repetition - Scan the bus, identify devices and match templates to find unit IDs and communication settings. Use custom baud rates and a guided address change. - Import CSV with column mapping, edit units and scaling in bulk, and save device setups as templates. Preview changes before updating a template or restore its previous version. - Pin key values; registers and charts follow the selected device. Quick-start guidance, shortcuts and saved commands reduce repeat work. Understand readings and trace their source - Compare interpretations side by side with 28 formats, including integers, float, BCD, HEX and ASCII. Set byte order, address base, units and scaling. - Use chart time windows, thresholds, focus view and a movable, pinnable cursor. Compare up to 4 metrics across devices on one time axis; overlay curves only for the same physical quantity and unit. - Open the original frame behind a value or chart point. Search and filter plain-language explanations of requests, replies, errors and timeouts. Connection quality and task progress help guide the next step. Keep collecting, act with care - Responsiveness, resource use and recovery under poor connectivity, high data rates, bursts and extended use are ongoing priorities for acquisition, charts and logging. - See each value’s age; old values are marked after disconnection. BaudHub reconnects automatically after reinserting an adapter or waking the Mac. - Connections start read-only. Unlock, preview and confirm each write; automatic read-back checks the result and an audit trail records it. Uncertain outcomes are flagged for review. Save the field data Record values continuously to CSV. Export frame logs, register maps and complete sessions for review, handover and troubleshooting. Test before hardware arrives The RTU/TCP slave simulator offers multiple unit IDs, changing values, square/triangle waves, pulses and editable presets for PLC, SCADA or master testing. Virtual RTU lets you test without an adapter. The serial terminal includes ASCII/HEX, timestamps, send history and file recording. Common questions - Which adapters work? RS485/RS232 adapters seen as serial ports by macOS, including FTDI, CP210x, PL2303 and CH340/CH341. USB-C connects directly; USB-A needs an adapter or hub. Driver guidance is provided. RTU uses serial, TCP Ethernet/Wi-Fi, and RTU over TCP a compatible serial gateway. - Which templates are included? SunSpec, SMA, Fronius, SolarEdge, KOSTAL, KEBA, go-e, Chint DDSU666/DTSU666, Schneider PM5xxx and Eastron SDM630. - How does comparison work? Select up to 4 metrics from at least two devices. Only connected sources are listed; live data is not required. Acquisition settings stay unchanged. Free supports comparison within its device limits. - Account or tracking? No BaudHub account, analytics, tracking or ads. We do not collect device data. Pricing & Access - Free: one Serial and one TCP device, two register blocks per device, unit scan 1–16, HEX logs, charts, comparison, terminal and one simulator. - Pro, one-time purchase: unlimited devices, full scan, plain-language logs, writes, all formats, CSV recording, export, template import and more simulators. - 7-Day/30-Day Site Passes unlock all Pro features, do not auto-renew and return to Free on expiry. - Pay via your App Store account. Restore Purchases restores Pro and active passes on your other Macs. Privacy: https://apps.h53d.xyz/apps/baudhub/policy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Vendor names identify supported devices; no affiliation is implied. Help or feedback: iuway@foowei.com

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View and compare data • Compare up to 4 metrics across devices using a shared time axis and cursor. Overlay curves for the same physical quantity and unit, or view other metrics in separate charts. • Resize the comparison picker to browse metrics from connected devices. Add missing units directly in the picker to continue setting up your comparison. • Registers, key values and charts follow the selected device, with its charts preserved when you switch back. Pin key values and see the time since their last update. • Use chart focus view and a movable, pinnable cursor. Open the original communication record behind a value to check its source. • Record readings continuously to CSV and export register configurations for later review and analysis. Connections and setup • Connect through compatible serial-to-network devices using RTU over TCP. Serial connections also support custom baud rates. • Device identification and template-matching hints help with setup, and CSV import is simpler. Preview template changes before applying them, or restore the previous version. • Edit units and scaling for multiple registers at once, then save the setup as a template for reuse. • The simulator adds square waves, triangle waves, pulses and editable presets. Save common terminal commands to reduce repeated typing. Usability and reliability • Task progress, connection quality indicators, quick-start guidance and a shortcut reference make it easier to see what is happening. • Old readings are marked after disconnection. Uncertain write results prompt you to check the outcome, helping avoid mistaken assumptions and repeated operations.

The developer, Shanghai Fuwei Information Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Shanghai Fuwei Information Technology Co., Ltd.
    Size
    3.4 MB
    Category
    Developer Tools
    Compatibility
    Requires macOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later.
    Languages
    English and 2 more
    • English, German, Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    • BaudHub Pro $0.00
    • 30-Day Site Pass $6.99
    • 7-Day Site Pass $2.99
    Copyright
    © 2026 foowei.com