HM-USB User Manual
Contents
1. Contact Information ProComSol Ltd Process Communications Solutions 17621 Narragansett Ave Lakewood OH 44107 USA Phone 216 221 1550 Fax 216 221 1554 Email sales procomsol com support procomsol com Web www procomsol com MAN 1001 7 1 05 Page 22. PC The module supports both USB 1 1 and USB 2 0 Power No external power sources are required for the HM USB Power is derived from the USB connection to the PC MAN 1001 7 1 05 Page 1 ProComSol Ltd HM USB User Manual Test Software Program HM Test is included on the installation CD to test the operation of the HM USB 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 toa 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 in your system Consult the Troubleshooting section of this manual if test failure Troubleshooting Verify the following Com port number in application is the HM USB com port number Loop power supply is on Loop resistance between 250 ohms and 1 Kohms Loop current within HART limits If multi drop configuration all transmitters in loop have unique addresses HM USB HART connections across loop resistor or across transmitter terminals HM USB USB connector seated firmly in PC USB connector NYDN PWN Ke 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
3. ProComSol Ltd HM USB User Manual HM USB User Manual Introduction The HM USB 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 USB cable to the PC and follow the Windows new hardware installation prompts Note that two components will be installed Serial Converter and Comport Emulation Driver After installing and with the HM USB still connected to the PC go to Start gt Settings gt Control Panel gt System gt Hardware gt Device Manager gt 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 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 HART Trartsmsier Loup Power lt a Supply Loop Resistor D Figure 1 HART Connections USB Connection Connect the integral USB A connector to any available USB port on your
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