Nibe MODBUS 40 Installateurhandbuch Seite 15

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
parameter address. Use ModbusManager to see which
parameter address a value has. See section The Modbus
command on page 15 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 15 for further in-
formation.
The Modbus command
Function Description
ID
0x03 Read holding registers
0x10 Write multiple registers
0x2B Read device identification**
* 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. 1199).
Register address
[40001-65534] included in LOG.SET
[40001-65534] not included in LOG.SET
[40001-65534]
N/A
No. of re- Max
gisters timeout
[1-20] 0,5 s
[1-2]* 2,1 s
[1-2]* 2,1 s
N/A 0,5 s
GB
15