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EncodingModbus Term

Mixed/Mid-Little Endian (BA DC)

The most significant word is first but bytes within each register are swapped.

Definition

Mixed endian (BA-DC, also called mid-little-endian) keeps the most significant 16-bit word in the lower register (like big-endian) but reverses the byte order within each register. Example: FLOAT32 200.0 — Reg0=0x4843 Reg1=0x0000. This order appears in some older Modicon/Schneider PLCs and a few motor drives.

Quick Facts

Also calledBA-DC, BADC, 2301
MSW locationLower register
Byte order in regLittle-endian
200.0 float32Reg0=0x4843 Reg1=0x0000

Related Terms

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ModPackQT Modbus Glossary · Updated 2026