EvoControl Ventilation – MPO1 Display

Language:: en-GB

Models: A30T, A50CS, A60T, A70T

6.14 ModBus

Modbus via TCP/IP (RJ45), std. port 502.

The parameter list contains a column “ModBus” which tells you which register the parameter belongs to (3 or 4) and whether the parameter is available to ModBus.

3 = Input register (Read).
4 = Holding register (Read / Write).

Address = Parameter id +1 (Ex. id 1000 => address 1001).

Values are normally sent as int16.

Some parameters with larger numbers (int32) utilise the next higher parameter id number as high number, marked with “ModBus” in the parameter list.

Values with decimal places are displayed as the value*10 (1 decimal place), marked with “Decimal” in the parameter list (Ex Temperature TL, id 1110 sends value 210 for 21.0°C).

Temperature values
Id	Text	ModBus	Level	Min	Max	Text values / ModBus	Factory value	Unit
1110	Supply air temperature	3	0	-50	70	Decimal number	0	°C

The function codes are defined on modbus.org.

EvoControl can use the following function codes:

Modbus function codes
Function code	Description of the programme
4	Read Input Registers
3	Read Multiple Holding Registers
6	Write Single Holding Register
16	Write Multiple Holding Registers

See parameter list.