HM-USB-ISO User Manual
MAN-1008 19/7/2012 v2
Designed and Produced under
Page 4 of 8
ISO 9001:2008 Certification
Step 6) Connection Test Software (Optional Step)
Now that you have installed the USB Virtual Serial Port driver (step 1), connected the modem to the PC
(step 2), checked the assigned COM port number (step 3), connected the modem to your HART device
(step 4), powered up your HART device (step 5), you are now ready to communicate with your HART
device/network.
If the program HM Test didn’t automatically start after installing the USB Virtual Serial Port driver,
launch the program from the CD or from the installed icon.
Click the “Set COM Port” button and select
the COM port number that was assigned to the USB
modem by Windows. Then select “Poll HART
Network” to
connect to a HART device/network. The program sends HART Command 0 to determine
what transmitters are connected to the network
. The “Status” box will indicate successful
(or otherwise)
communication to the HART device/network.
If the test failed click the button “COM Troubleshooter”
for help, or consult the
“Troubleshooting” section of
this manual.
Step 7) Set the COM port number in your HART configuration software
Open your HART configuration software and with reference to the
supplier’s
literature, set the
communication port to the COM port number noted in step 3.
You are now ready to configure your HART devices. You are also invited to try our HART Communicator
software free for 10 days, please see
http://www.hart-expert.co.uk/online-shop/hart-communicator-
software-free-10-day-trial-windows-pcs
Troubleshooting
A Windows PC remembers all USB devices ever connected to it. Depending on settings, windows may
only try to locate the USB driver files the first time a USB device is connected to the computer. If
Windows finds the correct driver files it copies them to the hard disk for future use and then installs the
USB driver. However, Windows only installs the driver for the specific USB port you connected HM-USB-
ISO to. Hence, if you connect HM-USB-ISO to another USB port on the same computer Windows will
need to re-access the driver files it stored on the hard disk and install the drivers for that specific USB
port. If the correct driver is not available when HM-USB-ISO is connected Windows may disable the
device.
Once disabled it doesn’
t matter if you disconnect and reconnect HM-USB-ISO (even on a
different USB port), Windows will remember the USB device is disabled and will ignore it. Follow the
steps below to fix installation issues.
1) Check if the HM-USB-ISO drivers were installed successfully:
Note: Two drivers are installed when HM-USB-ISO
is properly installed, the first is a “USB Serial
Converter” driver, the second is a “USB Serial Port” driver. We must check both drivers installed
correctly:
a) Reboot (restart) your PC.
b) Connect HM-USB-ISO to a USB port
c
) Go to “Device Manager” and make sure under the “View” menu of “Device Manager” you have
selected “Devices by Type”.
d) Expand
“Universal Serial Bus Controllers”
