Nibe MODBUS 40 User Manual

Manual reading
Caution
Manual readout is time consuming and only
one value at a time can be read, max timeout
2,1 s. The parameter does not have to be in-
cluded in the LOG.SET file.
Retrieve a value for the Modbus-master by using the
"Read holding registers" command with the desired
parameteraddress. Use ModbusManager to see which
parameter address a value has. See section The Modbus
command on page 19 for further information.
Enter the values
Caution
Only one value can be entered at a time. The
parameter does not have to be included in the
LOG.SET file.
By using the "Write multiple registers" command with
the desired parameter address, a value can be updated,
if the heat pump/indoor module permits it. The values
that can be updated are in ModbusManager. See sec-
tion The Modbus command on page 19 for more in-
formation.
Example of parameter addresses
Register ad-
dress
Parameter
40004Outdoor temperature (BT1)
40008Flow temperature (BT2)
40012Return temperature (BT3)
40013Hot water, top (BT7)
40014Hot water middle (BT6)
40015Brine in (BT10)
40016Brine out (BT11)
40033Room temperature (BT50)
43005Degree minutes
The Modbus command
Max
timeout
No. of re-
gisters
Register addressDescriptionFunction
ID
0,5 s[1-20][40001-65534] included in LOG.SETRead holding registers0x03
2,1 s[1-2]*[40001-65534] not included in LOG.SET
2,1 s[1-2]*[40001-65534]Write multiple registers0x10
0,5 sN/AN/ARead device identification**0x2B
* Two Modbus-registers are used to retrieve 32-bit parameters.
** Returns label (e.g. 'NIBE'), product code (e.g. 'F1245') and software version (e.g. 5539).
19
GB

Nibe MODBUS 40 Specifications

General

Brand	Nibe
Model	MODBUS 40
Category	Control Unit
Language	English