MBMap Registry
  1. Devices
  2. Therma
  3. TH 9000

Therma TH 9000 Modbus register map

Also covers TH9000

Thyristor power controller: status and faults, phase currents, input and output voltage, power, energy, load resistance, control settings, fault log and clock

  • Official
  • 44 registers
  • Modbus RTU
  • Revision 1 · 2026-11-08

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
1-based · wire address = address − 1

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

Map

Registers
44 holding registers
Groups
7
Translation tables
1
Revision
1 · 2026-11-08
Added
()
File
maps/therma/th-9000.mbmap.json · 9 KB · history
SHA-256
abd0830b034aac42f679a8723a34c7f883ecac29da17b9c056b0ce59bd7d28d3
Manufacturer
therma.com.br

Sources and notes

Source: Therma Manual de Operação, Controladores de Potência Microprocessados TH 9000, 12th edition (2026-01-08)

  • Modbus RTU on the drive's RS-485 port (terminals 18-20). Registers are numbered from 1, as in the manual (40001 is register 1).
  • Factory settings: address 1 (1 to 63), 9600 bit/s, no parity. The manual does not give the stop bits; 1 is assumed. The optional operator panel (IHM) has its own address and serial settings.
  • The energy counter is two words, low word first (40013 low, 40014 high).
  • After writing register 36 or 34/35, the date and time (and the fault code) can be read from registers 38-44. To set the clock, write registers 39-44 and then register 37.
  • Written from the manual; this map has not been tested on a device.
AreaAddressNameTypeAccessUnitScaleDescription
HR 1 uint16 R
HR 2 uint16 R A
HR 3 uint16 R
HR 4 uint16 R
HR 5 uint16 R
HR 6 uint16 R %
HR 7 uint16 R A
HR 8 uint16 R A
HR 9 uint16 R A
HR 10 uint16 R V
HR 11 uint16 R V
HR 12 uint16 R kW
HR 13 uint32 CDAB R kWh Low word first
HR 45 uint16 R Ω ×0.001 Load voltage / load current; 65535 when the current is 0
HR 46 uint16 R Ω ×0.001 Load voltage / load current; 65535 when the current is 0
HR 47 uint16 R Ω ×0.001 Load voltage / load current; 65535 when the current is 0
HR 17 uint16 W Write 0 or 1 to reset
HR 32 uint16 W Write 0 or 1 to reset the kWh reading
HR 18 uint16 RW
HR 19 uint16 RW
HR 20 uint16 RW
HR 21 uint16 RW
HR 22 uint16 RW
HR 23 uint16 RW s
HR 24 uint16 RW % Percent of the rated current
HR 25 uint16 RW % Percent of the rated current
HR 26 uint16 RW % Percent of the rated current
HR 27 uint16 RW % Percent of the rated current
HR 28 uint16 RW % Control value when the control signal is Modbus, in percent of the rated current
HR 29 uint16 RW
HR 30 uint16 RW
HR 31 uint16 RW
HR 33 uint16 W Write 0 or 1; the record is then in registers 38-44
HR 34 uint16 W Write 0 or 1
HR 35 uint16 W Write 0 or 1
HR 38 uint16 R
HR 36 uint16 W Write 0 or 1 to load the drive's date and time into registers 39-44
HR 37 uint16 W Write 0 or 1 to set the drive's clock from registers 39-44
HR 39 uint16 RW
HR 40 uint16 RW
HR 41 uint16 RW +1900
HR 42 uint16 RW
HR 43 uint16 RW
HR 44 uint16 RW

Help improve this map

Esc