HM-USB-ISO User Manual
MAN-1008 19/7/2012 v2
Designed and Produced under
Page 6 of 8
ISO 9001:2008 Certification
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) Under “Model” select “USB Serial Converter” and press “Next”
k) Windows will now install the USB Converter driver. Depending on your Windows settings you may be
notified that the driver is not Windows/Microsoft tested. If so you will be asked if you want to continue.
You must select “Continue” to install the driver. The “Hardware Update Wizard” window will close after
it has finished the installation.
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) In Device Manager expand the section “Ports (COM & LPT)”.
m
) Right click on “USB Serial Port (COMX)” and select “Update Driver”, a new window will open
titled
“Hardware Update Wizard”.
m
) Select the bullet item “Install from list or a specific location (Advanced)”, click the “Next” button
n
) Select the bullet item “Don’t search. I will choose the driver to install”, click the “Next” button
o
) Click on “Have Disk”, then click “Browse”.
p
) Browse to the driver folder on your desktop and select the file “ftdibus.inf”, click “Open” then click
“OK”.
q
) Under “Model” select “USB Serial Port” and press “Next”
r) Windows will now install the USB Serial Port driver. Depending on your Windows settings you may be
notified that the driver is not Windows/Microsoft tested. If so you will be asked if you want to continue.
You must select “Continue” to install the driver. The “Hardware Update Wizard” window will clos
e after
it has finished the installation.
s
) Please refer to the section above titled “
Check if the HM-USB-ISO
drivers were installed successfully”
to confirm the drivers are now correctly installed.
4) HM-USB-ISO is installed correctly but I still can
’t communicate to HART devices
:
Verify the following:
a. The COM port number assigned to USB HART Modem (Installation Step 3) has been set in your HART
Communication application (Installation Step 7)
b. Loop power supply is on (Installation Step 5)
c. Loop resistance is between 250 ohms and 1Kohms
d. Loop current is within HART limits
e. If multi drop configuration, all transmitters in the loop have unique addresses
f.
USB HART Modem’s HART connection
is across the loop resistor or across the transmitter terminals
(see diagrams in step 4)
g. The USB HART Modem
’s
USB connector is seated firmly in the PC
’s
USB connector
