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Decode Modbus RTU/TCP frames: unit, function, registers, CRC check.

Parse NMEA 0183 sentences into labeled fields with checksum check.

Build valid GGA/RMC/custom sentences with checksum, from decimal coordinates.

Break down CAN 2.0 frames: ID, DLC, data bytes, flags.

Decode MC Protocol 3E frames — ASCII or binary, command, device, end code.

Decode and build 1553B command words: RT address, T/R, subaddress, word count, mode codes.

Decode 1553B status words: RT address and every status flag bit.

Look up 1553B mode codes by T/R bit and code, with data-word rules.

Lay out a full 1553B transaction: command, data words and status, with parity checks.

Decode a 429 word: octal label, SDI, SSM, BNR/BCD and odd parity.

Build a 429 word from label, SDI, SSM and data — parity computed.

Float ↔ hex/registers with Modbus word orders ABCD/CDAB/BADC/DCBA.

Convert hex byte strings to readable ASCII text.

Convert between binary, octal, decimal and hexadecimal.

Signed integer ↔ raw hex at 8/16/32-bit widths.

Swap byte order of hex values: 16/32/64-bit, word swap.

Convert real numbers ↔ fixed-point Qm.n representation.

Compute CRC-16/MODBUS over hex or ASCII input, with LE/BE byte order.

Standard CRC-32 (ISO-HDLC) checksum for hex bytes or text.

CRC-16/CCITT-FALSE and related variants, selectable parameters.

CRC-8 with selectable polynomial and init variants.

Fully parameterized CRC: width, poly, init, reflect, xorout.

Reverse-search which CRC algorithm produced your checksum.

XOR checksum for NMEA 0183 sentences, validate or generate.

Raw counts ↔ engineering units with verified vendor presets.

Current loop ↔ process value with open-loop and range warnings.

Derive slope and offset from two measured reference points.

Convert between mA, V and psi process signal ranges.

BCD ↔ decimal with per-nibble validation and error position.

Check 4-20mA loop voltage budget against device burdens.

Translate 0-based, 1-based and 4xxxx Modbus register notations.

Decode %MW/%M/DB addresses, the bytes they cover, and overlaps.

MELSEC device numbers with the right radix — octal X/Y on FX5, hex on iQ-R.

Decode N7:2/8, B3/16 and slot-based I:2.1/3 SLC addresses.

Split XGK addresses into word and hex bit, bit and word devices alike.

Split an XGT Cnet frame into its fields and verify the BCC.

Build XGT Cnet request frames with sizes and BCC computed.

RTD resistance ↔ temperature per IEC 60751 (Callendar-Van Dusen).

mV ↔ °C for types K/J/T/E/N/R/S/B with cold-junction compensation.

NTC resistance ↔ temperature by Beta and Steinhart-Hart, with a 3-point fit.

Turn an instrument’s ±(% of reading + % of range) spec into an absolute error.

Counts ↔ voltage for N-bit ADCs, with LSB size.

Solve divider ratios with nearest E24/E96 resistor values.

Convert RMS, peak and peak-to-peak for sine waveforms.

Convert power ratios, dB, dBm and voltage levels.

Derive prescaler and segment values for a target CAN bitrate.

Pull-up resistor bounds from bus capacitance and speed mode.

Prescaler/period combinations for a target timer frequency.

Actual baud and error % from clock and divider settings.

Visualize C struct member offsets, padding and total size.

Extract and label bit fields from register values.

Convert NI TDMS files to CSV in your browser — no upload.

Inspect TDMS group/channel tree and properties in the browser.

Plot waveform columns from CSV files, fully client-side.

View any file as a hex dump with ASCII column.

Convert firmware images between Intel HEX, S-Record and raw binary.