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  2. Electron do Brasil
  3. MoniUni

Electron do Brasil MoniUni Modbus register map

Universal signal monitor for three RTD, level or 4-20 mA sensors: readings, differentials, minimums and maximums, alarms, faults and identity

  • Official
  • 89 registers
  • Modbus RTU
  • Revision 1 · 2026-11-08
  • Identity: serial number

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 8N1 · 9600 baud, 8 data bits, none 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
89 holding registers
Groups
12
Translation tables
2
Revision
1 · 2026-11-08
Added
()
File
maps/electron/moniuni.mbmap.json · 15 KB · history
SHA-256
8c8514dd13877b510b9da64a5efe7a42ddc36f8f0e95d2f57824d8380b22e9ca
Manufacturer
electron.com.br

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
RoleRegisterAddressTypeValues
Serial number Serial number holding 194 uint32 ABCD

Sources and notes

Source: Electron Mapa de Registradores - Protocolo Modbus RTU, MoniUni, v3.2

  • Modbus RTU; every value is a holding register. The document numbers the registers from 1 relative to 40.000 and does not say whether that number is sent as is; it is used here as the address on the wire. If every value looks shifted by one register, use address base 1.
  • The baud rate is detected automatically (1200 to 57600 bit/s) unless fixed; the parity can be none, even or odd. 9600 8N1 is assumed here.
  • Readings, limits and setpoints are raw values: the number of decimal places is set per sensor (registers 11-13), and the unit depends on the sensor type (°C for RTDs).
  • The settings for alarm actions, setpoints, hysteresis, analogue outputs and relays (registers 15-123) are left out: the document gives a scale of -1000 for many of them without explaining it.
  • Written from the register map; this map has not been tested on a device.
AreaAddressNameTypeAccessUnitScaleDescription
HR 1 bool bit 0 RW
HR 1 bool bit 1 RW
HR 1 bool bit 2 RW
HR 2 uint16 RW
HR 3 uint16 RW
HR 4 uint16 RW
HR 11 uint16 RW Divide the sensor 1 values by 10 to this power
HR 12 uint16 RW Divide the sensor 2 values by 10 to this power
HR 13 uint16 RW Divide the sensor 3 values by 10 to this power
HR 150 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 151 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 152 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 153 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 154 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 155 int16 R Raw value: apply the decimal places of the sensor (registers 11-13)
HR 156 int16 R
HR 157 int16 R
HR 158 int16 R
HR 159 int16 R
HR 160 int16 R
HR 161 int16 R
HR 162 int16 R
HR 163 int16 R
HR 164 int16 R
HR 165 int16 R
HR 166 int16 R
HR 167 int16 R
HR 169 bool bit 0 R
HR 169 bool bit 1 R
HR 169 bool bit 2 R
HR 169 bool bit 3 R
HR 169 bool bit 4 R
HR 169 bool bit 5 R
HR 169 bool bit 15 R
HR 172 bool bit 0 R
HR 172 bool bit 1 R
HR 172 bool bit 2 R
HR 172 bool bit 3 R
HR 172 bool bit 4 R
HR 172 bool bit 5 R
HR 172 bool bit 15 R Set by any sensor or differential
HR 178 bool bit 0 R
HR 178 bool bit 1 R
HR 178 bool bit 2 R
HR 178 bool bit 3 R
HR 178 bool bit 4 R
HR 178 bool bit 5 R
HR 178 bool bit 15 R Set by any sensor or differential
HR 184 bool bit 0 R
HR 184 bool bit 1 R
HR 184 bool bit 2 R
HR 184 bool bit 3 R
HR 184 bool bit 4 R
HR 184 bool bit 5 R
HR 184 bool bit 15 R Set by any sensor or differential
HR 22 uint16 RW
HR 23 uint16 RW
HR 24 uint16 RW
HR 98 uint16 RW s
HR 99 uint16 RW s
HR 100 uint16 RW s
HR 101 uint16 RW s
HR 102 uint16 RW s
HR 103 uint16 RW s
HR 124 uint16 RW
HR 125 bool bit 0 W Write 1 to reset
HR 125 bool bit 1 W Write 1 to reset
HR 125 bool bit 2 W Write 1 to reset
HR 125 bool bit 3 W Write 1 to reset
HR 125 bool bit 4 W Write 1 to reset
HR 125 bool bit 5 W Write 1 to reset
HR 125 bool bit 6 W Write 1 to reset
HR 125 bool bit 7 W Write 1 to reset
HR 125 bool bit 8 W Write 1 to reset
HR 125 bool bit 9 W Write 1 to reset
HR 125 bool bit 10 W Write 1 to reset
HR 125 bool bit 11 W Write 1 to reset
HR 126 bool bit 0 W Write 1 to restart; settings are kept
HR 188 uint16 R
HR 189 uint16 R
HR 190 uint16 R
HR 191 uint16 R
HR 192 uint16 R
HR 194 uint32 ABCD R
HR 196 uint16 R
HR 197 uint16 R
HR 198 uint16 R
HR 199 uint16 R Two digits
HR 200 uint16 R

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