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Modbus RTU/TCP Frame Builder & Decoder

Build common Modbus RTU or TCP requests and decode responses, exception frames and CRC status.

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Runs in your browser No account required Instant calculation

FastResults update immediately

PrivateInputs stay in the browser

PracticalBuilt for industrial workflows

Protocol request construction

Build a Modbus request

RTU CRC and TCP MBAP handled automatically

Protocol Slave / unit ID Function Start address / offsetDecimal or 0x hexadecimal

Quantity

Complete request frame01 03 00 00 00 0A C5 CD

PDU03 00 00 00 0ACRC C5 CD · low byte first

Request summaryRead 10 holding registers from offset 08 bytes on the wire

Paste an RTU or TCP frame. The selected protocol controls envelope parsing.

Frame bytes

Decoded resultAwaiting decode

Technology insights

Practical guidance derived from the current PyXis and Titania technical material.

Technology article

A structured approach to mapping vibration, alarms, machine settings and prognostic data into PLC, SCADA and CMMS systems.

How we can support you

Share the application, protocol, signal range or installation constraints with our engineering team.

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