Pollphase: Modbus Field

Pollphase is a Modbus TCP workbench for commissioning technicians, controls engineers, integrators, students, and lab benches. Save your own endpoints and register maps, poll them with as few requests as possible, decode values in every common byte order, and write to coils and holding registers only after you confirm. Pollphase 2.0 is a major upgrade, and everything is included in one purchase. POLL YOUR OWN DEVICES - Add, edit, and delete Modbus TCP endpoints with host, port, unit ID, and timeout - Read coils, discrete inputs, holding registers, and input registers (FC01 to FC04) - Block-optimized poll plan: points are merged into as few reads as your map allows, within the 125-register and 2000-bit limits and a gap you choose - Cycle-time budget for RTU (baud, parity, stop bits, turnaround) and TCP round trips, with bus load at your poll interval - Each read is checked for transaction ID, protocol ID, and MBAP length, and exception codes are named - The exact request and response bytes are shown for every poll DECODE ANY VALUE - UInt16, Int16, UInt32, Int32, Float32, UInt64, Int64, and Float64 - ABCD, CDAB, BADC, and DCBA byte orders, with scaling, offset, and units - Paste captured registers to see every type and byte-order interpretation side by side CONFIRMED WRITES - Write single coils (FC05), single registers (FC06), and multi-register values (FC16) - Engineering values are encoded to raw words, and the full frame is previewed before you confirm - Writes are allowed only on points you mark writable, and each write is checked against the device echo and logged FRAME TOOLS AND REFERENCE - CRC-16/MODBUS and RTU frame builder, plus ASCII frames with LRC - Paste a captured RTU frame to check its CRC - Converts Modicon references (40001 / 400001) to zero-based PDU addresses - Function code and exception code reference YOUR DATA, YOUR FILES - Import and export register maps as CSV - Back up and restore the whole workspace as JSON (the current workspace is kept on the device before any replace) - PDF commissioning brief with register map, poll plan, cycle budget, and audit trail An offline review simulator answers real Modbus frames from app-generated sample registers, so every screen works without a PLC or network. No account, ads, analytics, tracking, in-app purchases, or subscription. Pollphase connects only to the endpoints you add, and only when you poll or write. Pollphase is a commissioning and diagnostics aid. Verify maps, addressing, scaling, byte order, write authority, equipment state, process safety, and site procedures before acting on any value or write.