Vaisala HPP272, User Manual, Page: 4 / 66

7. Using Probe with Indigo Transmitters ................................................. 29
7.1 Indigo Overview ............................................................................................. 29
7.1.1 Wireless Configuration Interface Overview .........................................30
7.2 Attaching Probes .............................................................................................31
7.3 Connecting to Wireless Configuration Interface ........................................ 32
7.4 Logging in to Wireless Configuration Interface ..........................................33
8. Maintenance ....................................................................................................34
8.1 Cleaning the Probe .........................................................................................34
8.1.1 Chemical Tolerance .................................................................................34
8.2 Calibration and Adjustment .......................................................................... 35
9. Troubleshooting ............................................................................................ 36
9.1 Problems and Their Possible Solutions ........................................................36
9.2 Analog Output Error State ............................................................................40
10. Technical Data .................................................................................................41
10.1 Dimensions ......................................................................................................43
10.2 Accessories ..................................................................................................... 44
Appendix A: Modbus Reference ........................................................................45
A.1 Default Communication Settings ................................................................. 45
A.2 Function Codes ...............................................................................................45
A.3 Data Encoding ................................................................................................ 45
A.3.1 32-Bit Floating Point or Integer Format ...............................................45
A.3.2 16-Bit Integer Format ............................................................................. 46
A.4 Modbus Registers ...........................................................................................46
A.4.1 Measurement Data Registers .................................................................47
A.4.2 Configuration Registers ......................................................................... 48
A.4.3 Status Registers ...................................................................................... 54
A.4.4 Device Identification Objects .................................................................56
A.4.5 Test Value Registers ................................................................................ 57
A.5 Modbus Communication Examples ..............................................................58
Warranty ........................................................................................................................ 61
Technical Support ...................................................................................................... 61
Recycling ....................................................................................................................... 61
HPP272 User Guide M211972EN-B
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