Easy Modbus · terms of use

Terms of use

Last updated: 15 September 2026

1. Industrial-control safety — your responsibility

The app can read from, write to, and simulate Modbus equipment that controls real machinery, building services and industrial processes. Working with control systems is inherently hazardous when it is done without a full understanding of the equipment.

• Do not change a value, register, point or control logic unless you understand exactly what it does and what will happen when it changes. A Modbus write takes effect immediately, has no undo, and stays in effect until something else overwrites it.
• Always consult the equipment manufacturer's documentation — the register/points list, control drawings and user manual — before reading, writing, or changing any point or logic. The meaning, scaling, and safe range of every register comes from that documentation, not from the app.
• You are responsible for correctly identifying addresses, data types, scaling and units, and for verifying the effect of any change on non-critical equipment first where possible.
• You are responsible for having the authority and permission to access and modify the equipment you connect to, and for complying with all applicable site rules, codes, standards and laws.
• Do not use the app on life-safety, emergency, medical, or other systems where a fault, an incorrect value, or a communication interruption could cause injury, loss of life, or significant damage.

If you are not certain what you are doing, stop, and consult a qualified controls engineer and the manufacturer before proceeding.

2. The app is a tool, not advice

The app and its guides are general information and utilities. They are not engineering, safety, or professional advice, and they are not a substitute for the manufacturer's documentation or a qualified professional. The datatype “analyzer” offers possible interpretations of raw registers and can be wrong; you must confirm any interpretation against the equipment's documentation before relying on it.

3. No warranty

The app is provided “as is” and “as available”, without warranty of any kind, whether express, implied or statutory, to the maximum extent permitted by law. This includes, without limitation, any implied warranties of merchantability, fitness for a particular purpose, accuracy, and non-infringement. The developer does not warrant that the app will be uninterrupted, error-free, or that any reading, interpretation or write will be correct or safe for your equipment.

4. Limitation of liability

To the maximum extent permitted by applicable law, in no event will First Impact Development, or anyone involved in creating or supplying the app, be liable for any damages of any kind arising out of or in connection with your use of, or inability to use, the app. This includes, without limitation, direct, indirect, incidental, special, consequential, exemplary or punitive damages; loss of profits, revenue, data or goodwill; and damage to, malfunction of, or downtime of any equipment, process or property, and any resulting injury — whether based on warranty, contract, tort (including negligence), or any other legal theory, and whether or not the developer has been advised of the possibility of such damage.

Where liability cannot be excluded as a matter of law, it is limited to the greatest extent that law permits, and in no case will the developer's total liability exceed the amount you paid, if any, for the app in the twelve months before the event giving rise to the claim.

5. Your responsibilities

• Use the app lawfully, and only on equipment and networks you are authorised to access.
• Keep your own backups of any configuration you rely on; the app stores your data only on your own device.
• Supervise any write, and put values back when you have finished testing.

6. Third-party services

The Android version's free tier shows advertising supplied by Google AdMob and offers an in-app purchase through Google Play; those services are governed by Google's own terms and by our privacy policy. The Windows version contains no advertising. Your use of any third-party equipment or software remains subject to that third party's terms.

7. Licence and acceptable use

You are granted a personal, non-exclusive, non-transferable licence to use the app for its intended purpose. You may not resell, redistribute, or reverse engineer the app except to the extent that law expressly permits.

8. Changes

The app and these terms may change over time. Material changes to these terms will be reflected here, and the app may ask you to accept the updated terms. The “last updated” date above shows the current version.

9. Contact

Questions about these terms: [email protected]

These terms are provided in good faith and in plain language; they are not legal advice.