MBMap Registry
  1. Devices
  2. Treetech
  3. TM

Treetech TM Modbus register map

Transformer temperature monitor: RTD, oil, winding and OLTC temperatures, load and current per winding, cooling stage, alarms, relay states and identity

  • Official
  • 113 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
14 holding registers, 52 input registers, 6 coils, 41 discrete inputs
Groups
16
Translation tables
8
Revision
1 · 2026-11-08
Firmware
1.03 r1
Added
()
File
maps/treetech/tm.mbmap.json · 18 KB · history
SHA-256
96b4a1fefcdca3a8db997b0d04914267c1a4ceb51f0e27e6a88507be3bf41d22
Manufacturer
treetech.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 input 45000 uint32 ABCD

Sources and notes

Source: Treetech TM Mapa de Protocolos de Comunicação MAP-088, rev. 1.01

  • Modbus RTU on RS-485, FC01-FC06, FC15 and FC16. Addresses are 0-based, as sent on the wire.
  • Baud rate is selectable (4800 to 115200 bit/s), 8 data bits, no parity, 1 or 2 stop bits (detected automatically). The document gives no factory default for the baud rate or the address; 9600 and 1 are assumed here.
  • The document lists every value as a 16-bit word without stating a scale. Scales here are read from the documented ranges: temperatures and load are whole numbers, the winding current (0 to 655.35 kA) is in hundredths. The secondary current, the 48-bit timestamps and most settings are left out because their scale is not clear.
  • Winding 2 and 3 values only apply when the device is set for three windings (input register 1).
  • The document was written for firmware 1.03 r1. Written from that document; this map has not been tested on a device.
AreaAddressNameTypeAccessUnitScaleDescription
IR 0 uint16 R
IR 1 uint16 R One or three windings
IR 10000 int16 R °C
IR 10001 int16 R °C
IR 10002 int16 R °C
IR 10003 int16 R °C
IR 10100 int16 R °C
IR 10101 int16 R °C
IR 10105 uint16 R min Time left before the oil temperature trip
IR 10200 int16 R °C
IR 10201 int16 R °C
IR 10205 uint16 R min
IR 10206 int16 R °C Final winding-to-oil temperature gradient
IR 10207 uint16 R %
IR 10208 uint16 R kA ×0.01
IR 10300 int16 R °C
IR 10301 int16 R °C
IR 10305 uint16 R min
IR 10306 int16 R °C
IR 10307 uint16 R %
IR 10308 uint16 R kA ×0.01
IR 10400 int16 R °C
IR 10401 int16 R °C
IR 10405 uint16 R min
IR 10406 int16 R °C
IR 10407 uint16 R %
IR 10408 uint16 R kA ×0.01
IR 10500 uint16 R
IR 10501 uint16 R s
DI 10700 bool R
DI 10701 bool R
DI 10702 bool R
DI 10703 bool R
IR 10600 uint16 R min Time left in the automatic learning of the differential alarms
IR 10601 int16 R °C
IR 10602 int16 R °C
IR 10603 int16 R °C
IR 10604 int16 R °C
IR 10605 int16 R °C
IR 10606 int16 R °C
IR 10607 int16 R °C
IR 10608 int16 R °C
IR 10609 int16 R °C
DI 10104 bool R
DI 10105 bool R
DI 10106 bool R
DI 10107 bool R
DI 10108 bool R The trip delay is counting
DI 10202 bool R
DI 10204 bool R
DI 10206 bool R
DI 10302 bool R
DI 10304 bool R
DI 10306 bool R
DI 10402 bool R
DI 10404 bool R
DI 10406 bool R
DI 10503 bool R
DI 10505 bool R
DI 10000 bool R
DI 10002 bool R
DI 10012 bool R
DI 10100 bool R The two oil sensors differ by more than the set maximum
DI 0 bool R
DI 2 bool R
DI 4 bool R
DI 5 bool R
DI 10110 bool R
DI 10208 bool R
DI 10308 bool R
DI 10408 bool R
DI 29 bool R
DI 21 bool R
DI 22 bool R
DI 23 bool R
DI 24 bool R
DI 25 bool R
DI 26 bool R
DI 27 bool R
DI 28 bool R
CO 4 bool W Write 1 to clear the alarm memory (part 1)
CO 5 bool W Write 1 to reset
CO 6 bool W Write 1 to reset
CO 7 bool W Write 1 to reset
CO 8 bool W Write 1 to reset
CO 15 bool W Write 1 to reset
HR 10100 int16 RW °C
HR 10101 int16 RW °C
HR 10102 uint16 RW min
HR 10200 int16 RW °C
HR 10201 int16 RW °C
HR 400 uint16 RW
HR 401 uint16 RW
HR 402 uint16 RW
HR 500 uint16 RW
HR 501 uint16 RW
HR 502 uint16 RW Applied with the key in register 505
HR 506 uint16 RW
HR 507 uint16 RW
HR 508 uint16 RW Applied with the key in register 511

Help improve this map

Esc