The Modbus variant used in HMP60 and HMP110 series probes is Modbus RTU. Modbus support was added to HMP60 and HMP110 probes in 2016 for probe software version 2.1.4. The following table lists the default communication settings used when Modbus is enabled at the factory (chosen when ordering).
| Description | Default value |
|---|---|
| Serial bit rate | 19200 |
| Parity | None |
| Number of data bits | 8 |
| Number of stop bits | 2 |
| Flow control | None |
| Modbus device address | 240 |
| Serial delay | 0 |
| Communication mode | Modbus RTU |
Use Vaisala Insight software to change the Modbus serial communication settings if needed. Download Vaisala Insight software at www.vaisala.com/insight.
| The instrument must be switched off and on before the communication setting changes take effect. |