Nibe MODBUS 40 Installateurhandbuch Seite 15

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-bits parameters.
** Returns label (e.g. 'NIBE'), product code (e.g. 'F1245') and software version (e.g. 1161).
Example of parameter addresses
Parameter
Outdoor temperature (BT1)
Flow temperature (BT2)
Return temperature (BT3)
Hot water, top (BT7)
Hot water middle (BT6)
Brine in (BT10)
Brine out (BT11)
Room temperature (BT50)
Degree minutes
Register address
[40001-65534] included in LOG.SET
[40001-65534] not included in LOG.SET
[40001-65534]
N/A
Register address
40004
40008
40012
40013
40014
40015
40016
40033
43005
No. of re- Max time-
gisters out
[1-20] 0.5 s
[1-2]* 2.1 s
[1-2]* 2.1 s
N/A 0.5 s
GB
15