USB Programming Manual - TDK
Contents
1. See the front panel shows the serial address and USb C Remember this address for the next step In this picture the address is 6 the factory default GEN150 10 0 150V 0 10A DC AMPS CURRENT emm kl am 11 83 033 800 Rev A 7 7 Start Typing Commands When the USB connection is made the communication program is set up and the power supply address is known then you may begin typing commands to the power supply and reading the responses The command set is described in detail in the Genesys User Manual A sample remote programming session is shown below The power supply is set to deliver up to 5 0 volts and 100 amps It has measured the actual output to be 5 0015 volts No fault conditions are reported GEN_USB HyperTerminal File Edit View Call Transfer Help ADR 6 OK DN IDN le GEN8 308 USB Connected 0 03 35 Auto detect 19200 8 N 1 NOTE Before you can send any commands to the Genesys USB power supply you must send the address command ADR nn and an OK response must be returned 12 83 033 800 Rev A 8 Linking Multiple Supplies Using one Genesys with USB you can control more than one Genesys power supply The connection between the supplies can be just to share a communication port and or you can connect the outputs for series or parallel supplies 8 1 Communication Daisy Chain One Genesys with USB can be used to control a whole chain of sup2. rear panel features are the same as the standard Genesys power supply Front Panel Specifications On power up when USB is enabled front panel shows USb for three seconds Settable serial address 0 to 30 for daisy chaining many supplies to one USB port All other front panel features are the same as the standard Genesys power supply USB Drivers Most common drivers available on the Genesys Driver CD ROM Additional drivers available for download from http www ftdichip com Support for a variety of operating systems Windows Mac OS Linux and Windows CE Software Support The USB power supply may be installed as a Virtual COM port VCP This allows the USB supply to appear as an additional COM port i e RS 232 port available to the PC Application software can access the USB supply in the same way as it would access a standard COM port There is full support for COM ports including You may send commands with programs such as HyperTerminal Any programming language may use the native operating system drivers for the COM port TDK Lambda has Test and Measurement drivers including IVI COM IVI C and native LabView There is a USB driver library DLL called D2XX drivers These allow your application program can make direct communication to the Genesys USB without creating a virtual COM port There is support for the USB D2XX driver library including The library drivers are available on the Genesys Driver CD
3. series power supply allows the user to remotely program measure and check status of the power supply It uses a USB connection like those commonly used to connect computers to many types of equipment Communication is achieved by installing USB drivers and making the USB connection to the power supply There are two types of USB drivers available A Drivers that will make the USB connection appear as a new Serial port in your computer B Library files to allow a program to directly connect to the USB without creating a new serial port The USB command set capabilities and speeds are identical to the RS 232 485 command set This is described in detail in the User Manual for the Genesys product line Although communicating through the USB can be as simple as typing commands into a terminal program example Windows HyperTerminal TDK Lambda also provides a variety of drivers example programs and support for the USB 3 83 033 800 Rev A 2 Specifications 2 1 2 2 2 3 2 5 2 6 USB Specification USB 2 0 compliant Bus powered requires 5V DC power from the driving port Maximum USB cable length 16 feet from USB 2 0 spec USB signal and shield grounded to power supply chassis Rear Panel Specifications B Type USB socket four pins DIP switch to enable or disable the USB port Enable USB Also disables RS 232 and RS 485 IN Disable USB Allows RS 232 and RS 485 with daisy chaining All other
4. O S can find equivalent methods 7 1 Setup the Power Supply Before turning the Genesys AC power on set the rear panel 2 pole switch to enable the USB It a is sufficient to slide either of the two poles to DOWN NOTE The Genesys USB connection will be detected by the computer as soon as the USB cable connection is made even if the power supply has no AC power applied USB Enable USB B Switch Showing Socket USB Enabled ps A DA J D H DN _ IST __ L Hl IC D 2C C WC LE me R I W Figure 1 Rear Panel USB Features b Switch ON the Genesys AC power c See the front panel display show USB for three seconds If USB does not show on the front panel check the rear panel USB Enable switch shown above 8 83 033 800 Rev A 7 2 Find the Assigned COM Port When the Genesys USB power supply drivers are installed and the device is detected the drivers dynamically assign a COM port to the connection Since your computer may have a number of serial ports finding the one assigned to the Genesys USB can be a challenge For Windows XP right click My Computer and select Properties Open the Hardware gt Device Manager System Properties System Restore Automatic Updates I Remote General Computer Name Hardware Advanced Device Manager The Device Manager lists all the hardware devices installed on your com
5. ROM Library compatible with Windows Mac OS and Linux See http www ftdichip com for additional support USB Command Set Uses serial command set with abbreviated commands For example send PV to program the voltage Uses same commands as the standard Genesys power supply for RS 232 485 Commands are not SCPI compliant 4 83 033 800 Rev A 2 7 Linking Genesys USB To Other Genesys Supplies e Up to 30 supplies may be linked from one USB master to RS 485 slaves e The RS 485 slaves may be standard Genesys No extra cost for linking e The USB option cannot be combined with the IEMD LAN or Isolated Analog options e The USB allows combining power supply outputs in series and parallel 2 8 USB Command Speed e USB command speed is the same as the Genesys RS 232 485 speed e Average about 40 milliseconds per command about 25 commands per second e Most commands take 33 mSec A very few take up to 80 mSec Time for PV on o Command using USB Histogram for 200 Cmds Average 41 5 mSec Cmd 120 gt 100 S 80 2 60 40 u 20 0 33 49 64 71 Milliseconds per Command Time for MV Query using USB Histogram for 200 Cmds Average 36 6 mSec Cmd 200 150 100 50 Frequency 33 49 65 80 Milliseconds per Query 5 83 033 800 Rev A 3 Required Equipment To remotely control a Genesys power supply through the USB the following items are required a C
6. USER MANUAL FOR USB Interface GENESYS POWER SUPPLIES Document 83 033 800 RevA TDK Lambda Americas Inc High Power Division 405 Essex Road Neptune NJ 07753 Tel 732 922 9300 Fax 732 922 9334 Web www us I DK Lambda com HP Table of Contents 1 WE 2 o BE 2 4 General Information aa ENEE EES sa suavecdeseeendsstsbesnadeecenetze 3 2 SOPECITICATIONS eege ege Ee eege EE A 24 USB Specitication ninshi eerie in a iin late need SE Ed 4 2 2 R ar Panel Specificationss arseeni a aeara iin aaa T aaeain ridia EE AE 4 Sc Fron Panel Opee a OS r a e a das ves aaa aaa aAa ae Aaa aaao pe SAE E aae oean Sa Ea 4 E ER HERE A Set ENT HEET Eege Ee EE A 267 USB e ul Ee EE A 2 7 Linking Genesys USB To Other GenesyS Gupples 5 2 8 VSB eu Ee BE E 5 3 Required Equipment ee ccendeceeseectieececnetescced etscdeceedeotecevesecceedenscaney teeter 6 4 Grounding and Safety ccsecccccceeeseeeseeeeeeeeeeeeneeeseaesesneeeeeeeeseaesecaesaseeesneeaesseaeseseaeeneeeeeeenees 6 5 Install USB Drivers for a Virtual COM Port ccsseceseeeseeeeeseeeeneeeeeeeeseneeeseeeesneeeesenenas 7 5 1 Installation CD ROM 20 fine eee de edt eee 7 5 2 Install Eerad Eege AER EA 7 6 Install USB Cibrary Drivers r ee ee e ee ar Ea aa aa EES dee 7 7 Communicating Using a Virtual COM Port csccssecceseeeeeeeeesseeseseeeeeseeeseeeeeseeseseenenseeeess 8 Teta Setup the Power E HEEN iioi e dln A eet et ee eu 8 ZS Find the Assigned GOM Po
7. ltage greater than 400V and the Positive Output of the Power Supply is grounded Do Not connect the Positive Output to ground in a power supply in which you are connecting to a USB port 6 83 033 800 Rev A 5 Install USB Drivers for a Virtual COM Port To control your Genesys power supply through the USB port it is a simple solution to install it as a Virtual COM Port VCP This gives you the same utilities libraries and support as is given to your computer s legacy serial port i e RS 232 port For a Windows operating system CDM20600 exe is an installation package which is referred to as a Combined Driver Model CDM It installs the Virtual COM Port VCP drivers along with the driver library D2XxX 5 1 Installation CD ROM When you insert the Genesys USB Driver Disk into your computer s drive it should auto run and display a document with information on the available drivers and installation guides If the CD ROM auto run does not launch then double click Index_00 htm on the disk to launch your web browser You may read the installation guides by navigating to the USB Driver Installation Guides folder and opening the PDF guides Adobe Acrobat Reader is required It is recommended to browse the Driver Installation Guides folder on the CD ROM 5 2 Install Drivers The USB drivers may be installed before connecting the Genesys USB power supply or you may connect the power supply fir
8. omputer with USB port or a USB hub to expand the number of ports Genesys power supply with the USB interface option Driver disk from the power supply shipping container AC power cord as required by the power supply A USB cable Type A plug to type B plug popo NOTE The USB cable is not provided with the power supply shipping kit 4 Grounding and Safety Special consideration must be given to your USB connection to make sure the grounding scheme is understood and to ensure no ground offsets or hazardous voltages can cause damage to the port The USB Shield The shield is connected to the power supply chassis The USB Signals For the GENH GEN 1U and GEN 2U power supplies the USB signal lines are connected Safety Extra Low Voltage SELV ground This is isolated from the chassis and the outputs but the ground is tied to the J1 analog connector on the pins 1 and 14 side For the GEN 3U 10 KW and higher the USB signal lines are connected to chassis ground In power applications where high currents are switched suddenly ground offsets can occur that could damage the USB circuits in the controller or the power supply CAUTION Where high voltages or currents are being used it is strongly recommended to install an electrical isolator device into the USB line WARNING OUTPUT TERMINALS GROUNDING There is a potential shock hazard at the USB port when using power supplies with rated or combined vo
9. other communication program must use similar settings NOTE The Genesys with USB will only communicate using a COM port setting of 19200 BAUD A N Also the Genesys with USB requires using the Carriage Return terminator character The Line Feed character may be included in your message but it is ignored 10 83 033 800 Rev A Setup controller COM Port COM4 Properties Ke ASCII Setup Port Settings ASCII Sending Send line ends with line feeds Echo typed characters locally Line delay lo milliseconds Data bits d Character delay 0 milliseconds Bits per second Parity ls ASCII Receiving Append line feeds to incoming line ends Stop bits C Force incoming data to 7 bit ASCII How control Wrap lines that exceed terminal width Restore Defaults 7 6 Get the Power Supply Address Every Genesys power supply has a serial COMM port address which is a number from 0 to 30 In order to open communication to a power supply the addressing command ADDR nn must be sent To see your power supply s serial address go to the front panel of the supply and A If the REM LOC LED is illuminated briefly press and release the REM LOC button to put the supply into Local mode If the button does not respond the supply has been set to Local Lockout In this case cycle the AC power and try again D Press and hold the REM LOC button for three seconds
10. plies by using the J3 IN and J3 OUT connectors with RS 485 linking cables Each power supply must be set with a different serial address Communication to each supply is done by sending the addressing command ADR nn to select a power supply at address nn USB isolator Es l RS 485 RS 485 optional Link Cable Link Cable Cables J3 OUT J3 IN J3 OUT J3 IN SH TER e em Af e Up to 30 m Ge i supplies in i USB Option Ee one chain To t Serial Addresses 4 TT gt All slaves set to 19200 Baud must be different Controller l ch Set SW1 pin 6 UP i Set SW1 pin 6 DOWN e pin Set SW1 pin 6 UP USB Driver to enable RS 232 to enable RS 485 to enable RS 485 Set USB switch Down to Enable USB To Set the Serial Address For the USB Master view the serial setting as shown in section 7 6 Rotate the voltage encoder to set any address 0 to 30 Wait a few seconds for the address display to clear and update the new setting For the Slaves view the serial setting similar to section 7 6 Rotate the voltage encoder to set any address 0 to 30 ALSO verify the current display is set to 19 2 for 19200 Baud Rotate the current encoder to change it Wait a few seconds for the display to clear and update the new setting Refer to the Genesys User Manual for more information on the link cable selecting RS 485 and setting the address and Baud rate 8 2 Series and Parallel Supplies You may connect the outputs of Genesys powe
11. puter Use the Device Manager to change the properties of any device Device Manager The following picture shows that the Genesys USB has been installed as COM4 2 Device Manager TER Acton View Help 4 h i Network adapters a PCMCIA adapters Ports COM amp LPT EI Communications Port COM 1 N ECP Printer Port LPT1 EI NI PCMCIA 485 2 Communications Port 1 COM6 EI NI PCMCIA 485 2 Communications Port 2 COM5 a USB Serial Port COM4 SBR Processors E Smart card readers MB ennd vider and nama controllere 7 3 Open a Terminal Communication Program There are a variety of terminal communication utilities which sends your typed characters down the USB cable and displays any characters sent back Up through Windows XP the HyperTerminal program was installed with the operating system The following pictures are taken from it If you have any other operating system or if you want an alternative to HyperTerminal a web search will find many alternative programs 9 83 033 800 Rev A 7 4 Open the Assigned COM Port In your terminal communication select the COM port that was assigned to the Genesys USB GEN_USB HyperTerminal Enter details for the phone number that you want to dial Country region Area code Phone number Connect using TCP IP Winsock 7 5 Setup the COM Port The following pictures show how the HyperTerminal program is setup Any
12. r supplies together to produce Voltages greater than any one supply rating Series connection Plus and minus polarity series connection More current than any one supply rating parallel connection With any of these output configurations you can have USB communication to all the supplies by using a communication daisy chain as described above With any of these output configurations you can use the features of an analog control chain a shut off daisy chain or Advanced Parallel Refer to the Genesys User Manual for more information on series and parallel supplies and their features and warnings 13 83 033 800 Rev A This page left intentionally blank 14 83 033 800 Rev A
13. rt dudd aai a eaa aer AA te eini 9 7 3 Open a Terminal Communication Program ccccccceeseeeseeeeeeeeeeeeseeeeseaeeseeeesneeeeeeeseneeeneeeene 9 7 4 Open the Assigned COM Port 10 T5 S tup the COMPO riiete eea e a e aeaa a iae a eaa 10 7 6 Get the Power Supply Address 11 Tf Start Typing Commands esie ete tite eevee eine el ea dee hei ates 12 8 Linking Multiple Supplies ccccscccsseeeeseeeeeeeeeseeeseseeeenseeeeeeeeeseaesaseeeenseeeseneseseaeseseeeenseees 13 8 1 Communication Daisy Chalin ceecceccceeeeeeeneeeeeeeeeeeeeaeeeeeeeeeaeeesaeeeeeeseeeseeeseaeesneeseneeeneees 13 8 2 Series and Parallel Supplies AAA 13 1 83 033 800 Rev A WARRANTY The warranty for the power supply as described in the Genesys User Manual also applies to the USB option that is installed in the power supply SAFETY The safety requirements and warnings for the power supply as described in the Genesys User Manual also applies to the USB option that is installed in the power supply WARNING OUTPUT TERMINALS GROUNDING There is a potential shock hazard at the USB port when using power supplies with rated or combined voltage greater than 400V and the Positive Output of the Power Supply is grounded Do Not connect the Positive Output to ground in a power supply in which you are connecting to a USB port KD 83 033 800 Rev A 1 General Information The Universal Serial Bus USB option for the Genesys
14. st and have the computer prompt you to search for and install the drivers 5 2 1 If you Install Software First For a Windows system it is recommended run the CDM20600 exe program to install driver revision 2 06 00 5 2 2 If you Connect Genesys with USB First Before powering up the Genesys supply enable the USB port by moving the rear panel switch to DOWN as shown below in section TBD For some operating systems a Found new hardware wizard will pop up when the Genesys USB is connected and detected When it appears have the wizard search the CD ROM for the appropriate folder that has the driver files An example folder may be E USB Drivers Driver MS Windows Certified For a Windows system the installation wizard will run twice once to install the USB link and once to install the virtual comm port VCP 6 Install USB Library Drivers If you are writing your own application program to control the Genesys power supply through the USB port you will need to include the D2XX libraries These library function calls are documented in CD ROM USB D2XX Programmer s Guide pdf Additional programming support may be found on the FTDI website http www ftdichip com 7 83 033 800 Rev A 7 Communicating Using a Virtual COM Port A quick test for the Genesys USB connection is to use a serial port communication program The below example is specific to the Windows operating system Customers with other
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