ProComSol HM-USB-ISO User manual

ProComSol, Ltd HM-USB-ISO User Manual
MAN-1008 7/7/2009 Page 1
HM-USB-ISO User Manual
Introduction
The HM-USB-ISO HART Modem, USB is designed to connect PC’s to HART networks.
Application software can then configure, monitor, and document HART based
instrumentation.
Software Drivers
Before use, a USB Virtual Serial Port must be installed on the PC. Simply connect the
HM-USB-ISO USB cable to the PC and follow the Windows “Found New Hardware
Wizard” prompts. Insert the driver CD when prompted for the driver location. Note that
two drivers are installed: the USBMOD3 USB Serial Converter, and the USB Serial Port.
This means the Found New Hardware Wizard will run 2 times.
Found New Hardware Wizard for Windows XP
Here is a detailed description of the Wizard prompts and the required responses:
1. Welcome to the Found New Hardware Wizard
Select No, not this time.

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2. This wizard helps you install software for USBMOD3.
Select Install from a list or specific location (Advanced)
3. Choose search and installation options
Select Best driver at these locations.
Select Search removable media (floppy, CD-ROM...)

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4. USB Serial Converter installation finished.
5. This process now repeats for the USB Serial Port. Welcome to the Found New
Hardware Wizard.
Select No, not this time.

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6. This wizard helps you install software for USB Serial Port.
Select Install from a list or specific location (Advanced)
7. Choose search and installation options
Select Best driver at these locations.
Select Search removable media (floppy, CD-ROM...)

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8. USB Serial Port installation finished.
When completed successfully, the following will appear at the bottom of the screen:
Found New Hardware Wizard for Windows Vista
Here is a detailed description of the Wizard prompts and the required responses:
1. Found New Hardware USBMOD3
Select Locate and install driver software (recommended).

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2. Allow Windows to search online for driver software
Select Don’t search online
3. Insert the disc that came with your USBMOD3
Insert the disk. If disk already in, select Next.

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4. The software for this device has been successfully installed
Select Close
5. Found New Hardware USB Serial Port
Select Don’t search online

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6. Insert the disc that came with your USBMOD3
Select Next.
7. The software for this device has been successfully installed
Select Close

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8. When completed successfully, the following will appear at the bottom of the screen:
COM Port Assignment
After installing, and with the HM-USB-ISO still connected to the PC, go to Start ->
Settings -> Control Panel -> System -> Hardware -> Device Manager -> Ports, to see
what com port number was assigned to the modem by the Windows operating system.
The port labeled “USB Serial Port” is the assigned port.
In Windows Vista, the COM port is shown on the final install screen (Step 7 above).
This port assignment can be changed by the user. From the “Device Manager” menu,
select the USB Serial Port you wish to change. From the “Properties” page, select “Port
Settings”. Then select “Advanced”. The Com port can be set in the range 1-256.
HART Connections
The modem can be connected in one of two ways: across the loop load resistor (A – B)
or across the HART transmitter terminals (C – D). See Figure 1.
Figure 1. HART Connections
USB Connection
Connect the integral USB-A connector to any available USB port on your PC. The
module supports both USB 1.1 and USB 2.0.
Power
No external power sources are required for the HM-USB-ISO. Power is derived from the
USB connection to the PC.
Test Software
Program “HM Test” is included on the installation CD to test the operation of the HM-
USB-ISO. Launch the program from the CD or from the installed icon. Enter the com
port that was assigned to the modem by Windows. Then select “Poll HART Network” to
connect to a HART device. The program sends HART Command 0 to determine what
transmitters are connected to the loop. The “Status” box will indicate successful
operation of the HM-USB-ISO in your system. Consult the “Troubleshooting” section of
this manual if test failure.

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Troubleshooting
Verify the following:
1. Com port number in application is the HM-USB-ISO com port number.
2. Loop power supply is on.
3. Loop resistance between 250 ohms and 1Kohms.
4. Loop current within HART limits.
5. If multi drop configuration, all transmitters in loop have unique addresses.
6. HM-USB-ISO HART connections across loop resistor or across transmitter terminals.
7. HM-USB-ISO USB connector seated firmly in PC USB connector.
Warranty
The USB-HM is warranted for 1 year for materials and workmanship. Contact Support at
ProComSol, Ltd if having trouble. An RMA (Return Material Authorization) number
obtained from ProComSol, Ltd is required on all returned items.
Contact Information
ProComSol, Ltd
Process Communications Solutions
13000 Athens Ave.
Suite 104G
Lakewood, OH 44107
USA
Phone: [phone]
Fax: [phone]
Email: [email protected]
[email protected]
Web: www.procomsol.com