Modbus at CRP5

[Theodor K.]

Hi together,
can anyone help me with a modbus problem I have with CRP5?
I would like to read out the register 31001 (humidity value) and the length 2 registers (4 byte).
But the value I get is not the humidity value.

[Werner Fürst]

Hi Theodor,

To get the humidity value of the CRP5 please use the modbus address 31000 and not the modbus register address 31001.
Everytime the modbus address is equal modbus register address -1 for CRP5.
E. g.:
- humidity: 31000, length 2
- differential pressure: 31004, length 2
- serial number CRP5: 30000, length 2

See also Modbus manual https://www.rotronic.com/de-ch/produ...wnload?id=1084
chapter 2.1 - see Attention!
and
see chapter 2.4.5 Example: Read Input Register

[hannana]

See the instructions for use. Too good. Thank you!

bubble shooter

[wevegac]

How I can return? The player is stumped, they can opt to skip or guess, unlocking more of the song heardle

[rayshowers]

Hi Theodor,

To get the humidity value of the CRP5 please use the modbus address 31000 and not the modbus register address 31001.
Everytime the modbus address is equal modbus register address -1 for CRP5.
E. g.:
- humidity: 31000, length 2
- differential pressure: 31004, length 2
- serial number CRP5: 30000, length 2

See also Modbus manual https://www.rotronic.com/de-ch/produ...wnload?id=1084melon sandbox
chapter 2.1 - see Attention!
and Melon Sandbox is the excellent choice for individuals who seek to engage with characters
see chapter 2.4.5 Example: Read Input Register

I don't really understand the problem because if in the same case with another humidity value I wouldn't know what to do. However I just tried changing the modbus address as you said and it worked. Maybe I will research it more.