Convert user-entered Modbus values
Enter values from a register list, BMS point, gateway or commissioning result and convert them into useful formats. The tool does not connect to devices or read live registers.
Built for real commissioning work
This tool is intended for engineers working with BMS integrations, Modbus meters, controllers, gateways and third-party equipment where manually entered register values need to be checked, converted or broken down into individual bit states.
Turn analogue values into binary bits
Type in a 16-bit analogue/register value and see the individual bit states, signed equivalent, unsigned value, hex value and high/low bytes.
Turn binary bits back into a value
Set individual bit states and calculate the resulting analogue/register value. Useful for visualising packed fault, alarm and status bits during Modbus commissioning.
Visualise 32-bit register data
Enter Float32, signed or unsigned 32-bit values and see how two 16-bit registers combine, including normal/reversed word order and byte-swapped arrangements.
What the tool looks like
These previews are taken directly from the downloadable HTML tool, so when you open it on site it should look familiar from the training videos and from this page.
Register address decoder
Quickly convert between Hex, Decimal / JBus and traditional Modbus / Modicon addresses.
16-bit value to bits
Decode a register value into its signed equivalent, hex value, high/low bytes and individual bit states.
16-bit bits to value
Build a register value from individual bits when you need to prove packed status or alarm values.
32-bit word/byte order
Visualise how two 16-bit registers combine into one 32-bit value, including word and byte order changes.
Demonstration videos
Subscribe to BMS Logic Academy on YouTube
I’ll be adding practical demonstration videos showing how to use the Modbus tool during real BMS commissioning scenarios, including register address checks, signed/unsigned values, byte and word order issues, and packed bit status visualisation.
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Get the free Modbus tool
Enter your details and I’ll send you the free Modbus engineering tool. I’ll also send occasional BMS Logic Academy emails with engineering tools, training content, software consultancy information and relevant service offers. You can unsubscribe at any time.
The tool runs in your browser as a standalone HTML page, so you can save it locally and use it during commissioning.