After power-up the probe (in STOP mode) outputs the software version and the command
prompt.
• In RUN mode, a measurement output starts immediately after power-up.
• In POLL mode, the probe does not output anything after power-up. It must be accessed
with an addressed command.
• In MODBUS mode, the probe does not output anything after power-up: serial line
commands are not in use and the probe must be used with the Modbus protocol.
More information
‣
Wiring (page 24)
‣
Installing the driver for the USB cable (page 34)
‣
Accessing serial line command interface from analog or Modbus mode (page 36)
‣
Set serial interface mode (page 42)
6.2
Installing the driver for the USB cable
Before taking USB cable 219690 into use, you must install the provided USB driver on your PC.
When installing the driver, you must acknowledge any security prompts that may appear.
1. Check that the USB cable is not connected. Disconnect the cable if you have already
connected it.
2. Insert the media that came with the cable, or download the latest driver from
www.vaisala.com/software.
3. Execute the USB driver installation program (setup.exe), and accept the installation
defaults. The installation of the driver may take several minutes.
4. After the driver has been installed, connect the USB cable to a USB port on your PC.
Windows detects the new device, and uses the driver automatically.
5. The installation has reserved a COM port for the cable. Select Start > Vaisala > Vaisala
USB Instrument Finder, and verify the port number, and the status of the cable. The
reserved ports are also visible in the Ports of the Windows Device Manager.
Remember to use the correct port in the settings of your terminal program. Windows
recognizes each individual cable as a dierent device, and reserves a new COM port.
There is no reason to uninstall the driver for normal use. However, if you wish to remove the
driver files and all Vaisala USB cable devices, you can do so by uninstalling the entry for
Vaisala USB Instrument Driver from the Programs and Features menu in the Windows Control
Panel. In Windows XP and earlier Windows versions the menu is called Add or Remove
Programs.
HMP60 and HMP110 Series User Guide M211060EN-J
34
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