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  2. Rish
  3. RM3440i

Rish RM3440i Modbus register map

Also covers RISH Master 3440i, RISH Master 3440iDL

Rishabh RISH Master 3440i / 3440iDL touch screen multifunction meter with RS-485 (Modbus RTU)

  • Official
  • 104 registers
  • Modbus RTU
  • Revision 2 · 2026-10-17

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

Download .mbmap.json Raw JSON View on GitHub Suggest a correction Report a problem

Communication

Protocol
Modbus RTU
Unit ID
1
Serial
9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based

Connection values are defaults: the device may be configured differently.

Map

Registers
104 input registers
Groups
5
Revision
2 · 2026-10-17
Added
()
File
maps/rish/rm3440i.mbmap.json · 15 KB · history
SHA-256
7cea9e79075e2d510e2ebaa6d8a02b89383c1730c40ff864a1ad94eb31e2fa48
Manufacturer
rishabh.co.in

Sources and notes

Source: Rishabh Instruments, "RM 3440i Interface Definition", rev. E

  • Measured values are float32 input registers (FC04); the same values are also holding registers at the same address (FC03).
  • Energies are given here without a unit because the interface definition does not state it; the integer energies (0x0320 onwards) are 32-bit unsigned.
  • Parameters V1-V3 are L-N voltages on 3P4W and L-L voltages on 3P3W.
  • Not in this map: the values updated at the user update rate, the power-down time stamps, timers and the individual harmonics (0x0190 onwards).
AreaAddressNameTypeAccessUnitScaleDescription
IR 0 float32 ABCD R V
IR 2 float32 ABCD R V
IR 4 float32 ABCD R V
IR 6 float32 ABCD R A
IR 8 float32 ABCD R A
IR 10 float32 ABCD R A
IR 12 float32 ABCD R W
IR 14 float32 ABCD R W
IR 16 float32 ABCD R W
IR 18 float32 ABCD R VA
IR 20 float32 ABCD R VA
IR 22 float32 ABCD R VA
IR 24 float32 ABCD R var
IR 26 float32 ABCD R var
IR 28 float32 ABCD R var
IR 30 float32 ABCD R
IR 32 float32 ABCD R
IR 34 float32 ABCD R
IR 36 float32 ABCD R °
IR 38 float32 ABCD R °
IR 40 float32 ABCD R °
IR 42 float32 ABCD R V
IR 44 float32 ABCD R V
IR 46 float32 ABCD R A
IR 48 float32 ABCD R A
IR 50 float32 ABCD R W
IR 52 float32 ABCD R W
IR 54 float32 ABCD R VA
IR 56 float32 ABCD R VA
IR 58 float32 ABCD R var
IR 60 float32 ABCD R var
IR 62 float32 ABCD R
IR 64 float32 ABCD R
IR 66 float32 ABCD R °
IR 68 float32 ABCD R °
IR 70 float32 ABCD R Hz
IR 72 float32 ABCD R
IR 74 float32 ABCD R
IR 76 float32 ABCD R
IR 78 float32 ABCD R
IR 80 float32 ABCD R
IR 84 float32 ABCD R
IR 86 float32 ABCD R
IR 88 float32 ABCD R
IR 90 float32 ABCD R
IR 92 float32 ABCD R
IR 94 float32 ABCD R
IR 96 float32 ABCD R
IR 98 float32 ABCD R
IR 100 float32 ABCD R
IR 102 float32 ABCD R
IR 104 float32 ABCD R
IR 106 float32 ABCD R
IR 108 float32 ABCD R
IR 110 float32 ABCD R
IR 112 float32 ABCD R
IR 114 float32 ABCD R
IR 116 float32 ABCD R
IR 118 float32 ABCD R
IR 120 float32 ABCD R
IR 122 float32 ABCD R
IR 124 float32 ABCD R
IR 126 float32 ABCD R
IR 132 float32 ABCD R V
IR 134 float32 ABCD R V
IR 136 float32 ABCD R rpm
IR 138 float32 ABCD R
IR 140 float32 ABCD R
IR 142 float32 ABCD R
IR 200 float32 ABCD R V
IR 202 float32 ABCD R V
IR 204 float32 ABCD R V
IR 206 float32 ABCD R %
IR 208 float32 ABCD R %
IR 210 float32 ABCD R %
IR 212 float32 ABCD R %
IR 214 float32 ABCD R %
IR 216 float32 ABCD R %
IR 218 float32 ABCD R %
IR 220 float32 ABCD R %
IR 224 float32 ABCD R A
IR 226 float32 ABCD R h
IR 228 float32 ABCD R h
IR 230 float32 ABCD R
IR 266 float32 ABCD R
IR 268 float32 ABCD R
IR 292 float32 ABCD R
IR 294 float32 ABCD R
IR 296 float32 ABCD R
IR 298 float32 ABCD R
IR 300 float32 ABCD R
IR 302 float32 ABCD R
IR 304 float32 ABCD R
IR 306 float32 ABCD R
IR 800 uint32 ABCD R
IR 802 uint32 ABCD R
IR 804 uint32 ABCD R
IR 806 uint32 ABCD R
IR 808 uint32 ABCD R
IR 812 uint32 ABCD R

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