User's Guide _______________________________________________________________________
2 ____________________________________________________________________ M211060EN-H
Serial Line Communication ................................................... 31
Connecting to the Serial Interface ....................................... 31
Installing the Driver for the USB Cable ................................ 33
Terminal Application Settings for Digital Probes ................. 34
Accessing Serial Line Command Interface
(RS-485 Mode) from Analog or Modbus Mode ................... 36
Modbus Communication ........................................................ 37
Using Multiple Devices over RS-485 ................................... 38
List of Serial Commands ....................................................... 39
Device Information and Status .............................................. 40
View Device Information ...................................................... 40
View Calibration Information ............................................... 41
Enter Calibration Information ............................................... 41
View Order Code ................................................................. 41
View Serial Number ............................................................. 42
View Software Version ........................................................ 42
Serial Line Output Commands .............................................. 42
Start Measurement Output .................................................. 42
Stop Measurement Output .................................................. 43
Output the Measurement Message Once ........................... 43
Configuring Serial Line Operation ........................................ 43
Set Serial Line Settings ....................................................... 43
Set Serial Interface Mode .................................................... 44
Set Output Interval ............................................................... 45
Set Measurement Filtering .................................................. 45
Set Probe Address .............................................................. 46
Set Serial Interface Delay .................................................... 46
Set Measurement Units ....................................................... 47
Calibration Commands .......................................................... 48
Calibrate Humidity Measurement ........................................ 48
Clear Adjustment of RH Measurement ................................ 49
Calibrate Temperature Measurement ................................. 49
Clear Adjustment of T Measurement ................................... 50
View User Adjustment Parameters ..................................... 50
Other Commands.................................................................... 51
Set Analog Output Mode ..................................................... 51
Set Analog Output Parameters and Scaling........................ 52
Set Analog Output Error Indication Level ............................ 53
Extend Analog Output Range .............................................. 54
Extend Maximum RH Reading ............................................ 54
Display Command List......................................................... 55
Display the Currently Active Errors ..................................... 55
Connect to the Probe in POLL Mode .................................. 55
Close the Connection in POLL Mode .................................. 56
Reset the Probe ................................................................... 56
Restore Factory Settings ..................................................... 56
Periodic Maintenance ............................................................. 57
Cleaning .............................................................................. 57
Changing the Filter .............................................................. 57
Calibration Procedure ............................................................ 58
Adjustment Procedure Using Serial Line
(HMP110 and HMP113) ........................................................... 58