MBMap Registry
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  3. C71X

Contemp C71X Modbus register map

Also covers C714, C715, C719

Process controller (C714, C715, C719): process value, setpoints, output, alarms, heater current, programs and main control, input and communication settings

  • Official
  • 64 registers
  • Modbus RTU
  • Revision 1 · 2026-11-08
  • Identity: firmware

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.

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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
64 holding registers
Groups
9
Translation tables
2
Revision
1 · 2026-11-08
Firmware
from 2
Added
()
File
maps/contemp/c71x.mbmap.json · 13 KB · history
SHA-256
ca9e8e28664314060112c03afb98c0cd903de5bfb8ab1eb3d6ac6b19d94429ea
Manufacturer
contemp.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
Firmware Software version holding 160 uint16

Sources and notes

Source: Contemp Mapa de Registros Modbus, Controlador de Processos C714, C715 e C719, rev. 03

  • Modbus RTU slave on RS-485 (optional). Registers are numbered from 1, as in the document. FC03 reads and FC06/FC16 writes; the on/off registers can also be read and written as coils.
  • Baud rate 9600 to 57600 bit/s, parity none, odd or even, 1 or 2 stop bits. The document gives no factory default; 9600 8N1 and address 1 are assumed here.
  • Values marked in engineering units are whole numbers with the decimal places set in register 63 (for example 1234 with one decimal place is 123.4).
  • The program segments (registers 250-1227), the output assignments, the special linearisation table and the 16-character tag (one character per register) are left out.
  • Written from the register map; this map has not been tested on a device.
AreaAddressNameTypeAccessUnitScaleDescription
HR 1 int16 R In engineering units, with the decimal places set in register 63
HR 2 int16 RW In engineering units, with the decimal places set in register 63
HR 3 int16 RW % ×0.1 Control output; writable in manual mode
HR 4 int16 RW
HR 5 int16 RW
HR 6 int16 RW
HR 7 int16 RW
HR 8 int16 RW
HR 9 uint16 RW
HR 18 bool bit 0 R
HR 18 bool bit 1 R
HR 18 bool bit 2 R
HR 18 bool bit 3 R
HR 19 uint16 R
HR 20 uint16 R
HR 21 uint16 R
HR 22 uint16 R A ×0.1
HR 23 uint16 R
HR 24 uint16 R Option code from the document's table 6 (0 = none, A to J = an option); how the letter is encoded is not stated
HR 25 uint16 R Option code from the document's table 6 (0 = none, A to J = an option); how the letter is encoded is not stated
HR 26 uint16 R Option code from the document's table 6 (0 = none, A to J = an option); how the letter is encoded is not stated
HR 28 uint16 R
HR 29 uint16 RW
HR 30 uint16 RW
HR 31 uint16 RW 101 = continuous
HR 32 uint16 RW
HR 33 uint16 RW min Shown as hh:mm (5999 = 99:59)
HR 34 uint16 RW
HR 35 uint16 R
HR 36 bool bit 6 R
HR 50 uint16 RW
HR 51 uint16 RW
HR 52 uint16 RW
HR 53 uint16 RW 0 = off. In engineering units, with the decimal places set in register 63
HR 54 uint16 RW s 0 = off
HR 55 uint16 RW s 0 = off
HR 56 uint16 RW % ×0.1
HR 57 uint16 RW
HR 59 int16 RW
HR 60 uint16 RW
HR 61 uint16 RW
HR 63 uint16 RW
HR 64 int16 RW
HR 65 int16 RW
HR 66 uint16 RW s ×0.1 0 = off
HR 67 int16 RW
HR 78 uint16 RW
HR 81 uint16 RW s
HR 82 uint16 RW % ×0.1
HR 83 uint16 RW % ×0.1
HR 99 uint16 RW
HR 102 uint16 RW
HR 107 uint16 RW
HR 110 uint16 RW
HR 115 uint16 RW
HR 118 uint16 RW
HR 123 uint16 RW
HR 126 uint16 RW
HR 132 uint16 RW A ×0.1
HR 138 uint16 RW
HR 139 uint16 RW
HR 140 uint16 RW
HR 160 uint16 R ×0.01 Shown as A.BC
HR 161 uint16 RW

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