ISO-LD - ICP DAS
Contents
1. 400 0 37 5 800 0 25 1 600 0 18 75 0 15 625 Loadcell offset voltage adjustment 0 4 096V 12 bits resolution ISO LD User s Manual Ver 2 4 02 12 04 5 Digital Inputs 8 channels photo isolated 12 24V digital input Digital Outputs 7 channels isolated open collector NPN digital output 100mA e 8 bits TTL LED for the indication of analog input magnitude Optional daughter board The DN 25 screw terminal board with D Sub 9 pin and 25 pin cables is provided for easy wire connection with the controlled device or equipment This daughter board is not the standard component included in ISO LD package 1 4 General Specifications Bus Type ISA Bus Connector One 9 pin and one 25 pin D type female connectors Operating temp 0 50 C Storage temp 20 C 70 C Humidity 0 90 non condensing Dimensions 183mmx115mm 1 5 Product Check List In addition to this manual the package includes the following items e ISO LD multifunction card e Software CD ROM e Users manual It is recommended to read the release note firstly All importance information will be given in the release note as follows Where you can find the software driver utility and demo programs How to install software amp utility Where is the diagnostic program FAQ and answer ISO LD User s Manual Ver 2 4 02 12 04 6 Attention If any of these items is missing or damage2. Active Active Si Figure 6 1 The form of demo 1 program DEMO 2 Digital Output This example demonstrates the digital output function under the setting of Base Address 220h and IRQ 0 Click ON or OFF button on the corresponding Digital Out channel to turn on or off the corresponding digital output channel By the way clicking on Read button can read back the condition of digital output ISO LD User s Manual Ver 2 4 02 12 04 43 im ISO LD Digital Output Demo Base Address Eu IRQ 0 Figure 6 2 The form of demo 2 program DEMO 2 Digital Input This example demonstrates the digital input function under the setting of Base Address 220h and IRQ 0 Click the Get DI button to obtain the status of Digital Input And clicking Get Latch DI button can obtain the digital value after latched User can select the digital input channel and click the clear latch button to clear the latch value on the corresponding digital channel Besides input the DI setting value into the text field and click Set DI Mode to configure the Digital Input Active Mode for each digital channel Furthermore clicking on Get DI Mode can obtain the current setting for Digital Input Active Mode Finally click on Exit to exit the application w ISO LD Digital Input Base Address 2204 IRQ IW DI DIO D I DI2 DIS DI4 DIS DI6 DI D l T DI Mode
3. Ver 2 4 02 12 04 8 The embedded controller provides the following functions with ISO LD series board 2 3 4 8 channels of isolated digital input 7 channels of isolated O C output 8 channels of TTL LED indicator 2 channels of AD converter OE Es 2 1 1 Eight channels of isolated digital input The block diagram of isolated digital input is given in Sec 2 7 2 These DI can be used as general purpose input or Special purpose input such as external trigger signal This version firmware only support general purpose input The OEM ODM user can specify their special requirement therefore the embedded controller can implement the detail control and provide a new command set for Host PC X86 site application 2 1 2 Seven channels of isolated O C output The block diagram of isolated digital input is also given in Sec 2 7 1 These DOs can be used as general purpose output or special purpose output such as real time alarm indicator This firmware version only supports general purpose output The OEM ODM user can specify their special requirement therefore the embedded controller can implement the detail control and provide a new command set for Host PC X86 site application 2 1 3 Eight channels of TTL LED indicator The block diagram of isolated digital input is given in Sec 2 7 4 These TTL LED indicators are designed to connect to 8 LEDs for indication of analog input magnitude For example the user
4. 1 4 for details e Syntax WORD LD ReadDaBias WORD wDa e Parameter wDa 12 bits data write to DA 074096 e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 23 LD ReadAd Description ISO LD User s Manual Ver 2 4 02 12 04 60 Read the 12 bits HEX data of current active AD The active AD is setting by LD SetChannelGain This function will return the previously data of embedded controller instead of read a new one And the sampling rate is setting by LD_SetPacerTimer therefore this function maybe return the same value if the user call this function twice very quickly To compute the real value refer to Sec 2 1 4 for details Syntax WORD LD ReadAd WORD wAd e Parameter wAd address of wAd e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 24 LD StartAdsPacer e Description Start a number of AD conversions The embedded controller will perform AD conversions periodically and write the 12 bits data into FIFO The sampling rate is define by LD SetPacerlimer The user must call LD_ReadFifo to read back the AD data from FIFO e Syntax WORD LD StartAdsPacer WORD wCount Parameter wCount total number od AD conversion wCount 256 Return ActiveError this board must call LD Chec
5. Demo10 provides the demonstration for digital input and output function of two ISO LD boards under the hardware setting of Base Address 220h and 230h and IRQ 0 ISO LD User s Manual Ver 2 4 02 12 04 47 in ISO LD Two Boards Digital 1 0 FEE oo Base Address 3 E IRQ 0 Q DOO DO1 DO DO3 DO4 DOS DO6 om eel om sl om om om DI DIO DIT D DI3 DI4 DIS DI6 DI Board 1 Base Address 230h IRQ 0 CRW en Figure 6 10 The form of demo 10 program DEMO11 Two Boards A D Pacer Demo11 provides the demonstration for A D Pacer function of two ISO LD boards under the hardware setting of Base Address 220h and 230h and IRQ 0 w ISO LD Two Boards ADsPacer rBoard0 Base Address 220h IRQ 0 10 Board Type Gain Mode ISO LDL 0 BE C 1S0 LDH Data Number Channel 256 Channel 0 Sampling Rate C Channel 1 5000 Hz Board1 Base Address 230h IRQ 0 10 Board Type Gain Mode C ISO LDL 0 B ISO LDH Data Number Channel 256 Channel 0 Sampling Rate C Channel 5000 Hz Figure 6 11 The form of demo_11 program ISO LD User s Manual Ver 2 4 02 12 04 48 Appendix Appendix A Related DOS Software A 1 Where is the related software The related DOS software in the CD is given as following NAPDOSI ISA ISOLD DOS TC LIB Library for TC2 X NAPDOS ISA ISOLD DOS TC DEMO Demo program for TC NAPDOS ISA ISOL
6. Digital Input Connection DI3 DI7 2 7 3 Analog Input Connection The wire connection for analog input is demonstrated in Figure 2 12 Because analog input channel 0 is provided for general application single end method is adopted for analog input wire connection Due to the channel 1 is applied for strain gauge signal the differential signal wire connection is used for more precise signal measurement by reducing noise influence as shown in Figure 2 12 ISO LD User s Manual Ver 2 4 02 12 04 18 CN Vin0 CD Signal ISO LD GND 6 CNI Vin1 CQ Signal ISO LD Vin1 7 Figure 2 12 Analog Input Connection for channel 0 and 1 2 7 4 TTL LED Indicator Connection The wire connection for TTL LED is shown in Figure 2 13 The 5V is the common source of the LED indicator That is 5V need to be connected to the anode of the LED And then the cathode of each LEDs needs to be connected to the corresponding LED pin The Pin of TTL LED is controller by analog input measurement to turn ON or OFF the corresponding LED indicators as shown in Figure 2 13 CN3 5V ISO LD Va LEDO Figure 2 13 TTL LED Indicator Connection ISO LD User s Manual Ver 2 4 02 12 04 19 2 8 Calibration Calibration method is provided in section 2 1 4 by hardware setting of variable resistor VR1 and VR2 The VR1 provides the function to adjusting the offset bias voltage for DC analog input level A
7. ISO LD board are set by the following two variable resistors VR1 AD offset adjustment for analog input channel 1 amp channel 2 VR2 G1 gain adjustment Changing this VR value can change amplifier gain from 100 to 10000 ISO LD User s Manual Ver 2 4 02 12 04 11 2 2 Board Layout Oo 39 So GP D O OOOOoOoOOOOoOOOO O OOOOOoOoOOOOOO Figure2 3 ISO LD Board LAYOUT CN1 The terminal of A D converter for voltage input CN2 The terminal of digital input and output CN3 TTL LED indicator connector JP1 IRQ selection ISO LD User s Manual Ver 2 4 02 12 04 12 2 3 IRQ Channel Selection Figure 2 4 demonstrates the interrupt selection by the hardware selection jumper JP1 The factory setting is NO interrupt setting IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 IRO9 IRQ10 IRQ11 IRQ12 IRQ14 IRQ15 NC Default O O O O O O O O O O O O O O O O O O O O S JP1 Figure2 4 JP1 2 4 VO Base Address setting The ISO LD can be configured as the one of 8 consecutive locations in VO address space from BASE to BASE 7 by the DIP switch as shown in Figure 2 5 and table 2 1 The default setting is ON Ne RER 1 2 3 4 5 6 A8 A7 A6 A5 A4 NG Figure2 5 Base Address DIP Switch ISO LD User s Manual Ver 2 4 02 12 04 13 Table 2 1 Base Address se
8. SAO ISOLDA P Pe ee ead tons Oe ee Oi gee GAGS 33 5 2 11 ISOLD Get TEE 34 5 2 12 ISOLD Clear Latch DI DS EG EG OG Ee GR 34 5 2 13 SOLD SetChannelCon fig oe ee ee abe 35 5 2 14 ISOLD Get hannel ERG roe ee EE ae EE 36 5 213 ISOED S CODA BIAS us io eelere ER RE state das 36 5 2 16 ISOLD Get DA BI GS eegen 37 5 2 17 ISOLD AD Polling HEX SS Se ee De Et cul nde EE 37 S SISOELD AD POLIS EE E 38 D2 PO UISOED AD SP GCCTHON sates sled chili eae aig tel N skider 39 D2 LO AS OLD ADSE ACER e EE GIS 40 92 21 TS OLD S t Bay DE ER een Ge Ren re 40 92 22 SOLED MCPLD he es ee ie Ne e A ede ie 41 6 DEMO PROGRAMS FOR WINDOWS ees ee ee seke 42 APPEND RE ei ee Ee 49 APPENDIX A RELATED DOS SOFTWARE sees esse ee eek ee ee ee ee ee se ee 49 A I Where is the related software 49 A 2 LIB Function Description ese ER EES ke SN GE N GN GE GE AN Ge SG Ee N 50 APPENDIX B IO BASE REGISTER eeuse sees ee ee ee ee ee ee ee ee ee ee ee ee ee ee 63 ISO LD User s Manual Ver 2 4 02 12 04 3 1 General Information 1 1 Introduction The ISO LD series is an ISA bus type isolated loadcell DAQ board The isolation inputs can be operated with up to 500Vrms of common mode voltage The common application of ISO LD series board is suitable for static force measurement and dynamic force analysis Because there are on board excitation voltage DC 12V and high gain amplifier users do not have to buy any extra power supply and signal conditioning mo
9. digital output value Return ISOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMO2 for more information ISO LD User s Manual Ver 2 4 02 12 04 32 5 2 9 ISOLD ReadbackDO Description Read back the O C digital output value from the embedded controller of ISO LD board Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD ReadbackDO WORD wBoardNo BYTE bDO Parameter wBoardNo input ISO LD board number bDO output address of DDO Return ISOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMO2 for more information 5 2 10 ISOLD_DI Description Obtain the 8 isolated digital input values from the ISO LD board Bit 0 7 correspondingly stands as the channel 0 7 respectively The DI working mode introduced in Sec 5 2 6 will take effect on this function Please call ISOLD_ActiveBoard first before using this function Syntax WORD ISOLD_DI WORD wBoardNo BYTE bDI Parameter wBoardNo input ISO LD board number bDI output address of bDI ISO LD User s Manual Ver 2 4 02 12 04 33 Return SOLD NoError OK SOLD BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMOS for more information 5 2 11 ISOLD GetLatchDI Description Obtain the 8
10. e Description Obtain the version information of ISOLD DLL driver e Syntax WORD ISOLD GetDllVersion viod e Parameter None e Return DLL version information For example If 101 hex is return it means driver version is 1 01 5 2 2 ISOLD ActiveBoard e Description Activate the device It must be called once before using the other functions of ISO LD board e Syntax WORD ISOLD ActiveBoard WORD wBoardNo WORD wBase WORD wlrg ISO LD User s Manual Ver 22 4 02 12 04 28 e Parameter wBoardNo input ISO LD board number 0 gt 7 wBase input Base address 200h gt 3F0h refer to Sec 2 4 wlrq input IRQ number refer to Sec 2 3 e Return ISOLD NoError OK ISOLD DriverNoOpen Kernel driver can not be found SOLD ExceedMaxBoardNum wBoardNo exceeds the maximum board number 7 SOLD ActiveBoardError This board can not be activated ISOLD_BaseOverRange Base address is over range ISOLD BaseOverlap Base address overlap ISOLD_IrqNumError IRQ number is illegal ISOLD_BoardlsActive Board is active now Note Refer to DEMO1 for more information 5 2 3 ISOLD CloseBoard e Description Stop and close the ISO LD kernel driver and release the device resource from computer device resource This method must be called once before exiting the user s application program Syntax WORD ISOLD_CloseBoard WORD wBoardNo Parameter wBoardNo input ISO LD board number 0 7 e Return ISOLD
11. ClearLatchDIl l 36 255 Channel Get DI Set DI Mode fo E Get Latch DI i Clear Latch Exit Figure 6 3 The form of demo 3 program ISO LD User s Manual Ver 2 4 02 12 04 44 DEMO4 Digital Input and Output DEMO4 demonstrates the digital input and output function under the setting of Base Address 220h and IRQ 0 w ISO LD Digital 1 0 Base Address 220h Figure 6 4 The form of demo 4 program DEMOS A D Polling HEX Demo5 illustrates the A D Polling function of ISO LD in HEX mode under the hardware setting of Base Address 220h and IRQ 0 i ISO LD ADPollingHex Configure Board l S0 LDL Gain Mode C ISO LDH D M EXIT r Channel Data Number Ze Channel 0 500 C Channel Figure 6 5 The form of demo 5 program DEMO6 A D Polling Demo6 illustrates the A D Polling function of ISO LD in decimal mode under the hardware setting of Base Address 220h and IRQ 0 ISO LD User s Manual Ver 2 4 02 12 04 45 is ISO LD ADPolling 0 Configure 5 i Board E i ISO LDL Gain Mode Se C ISO LDH 0 7 gt 1 8 gt 1 3 al Channe 7 Data Number SEL gt 1389 Channel 0 500 2 500 gt 1 441 C Channel me Ee ren BIO D 1 ke Ta n Figure 6 6 The form of demo 6 program DEMO7 A D Pacer HEX Demo7 illustrates the A D Pacer function of ISO LD in HEX mode under the hard
12. D DOS TC Driver Driver source program NAPDOSI ISA ISOLD DOS MSCI LIB gt Library for MSC 6 X NAPDOS ISA ISOLD DOS MSC DEMO Demo program for MSC NAPDOSI ISA ISOLD DOS QB DEMO gt Demo program for QB The completely source listing of demo program is given in TC MSC and QB format This program is compiler in LARGE mode and link with LD_L lib in both TC and MSC ISO LD User s Manual Ver 2 4 02 12 04 49 A 2 LIB Function Description A 2 1 LD ShortSub2 e Description Compute C nA nB in short format short 16 bits sign integer This function is provided for testing purpose e Syntax short LD ShortSub short nA short nB e Parameter nA short integer nB short integer e Return Return a short integer nA nB A 2 2 LD FloatSub2 e Description Compute C nA nB in float format which is 32 bits floating pointer number This function is provided for testing purpose e Syntax float LD ShortSubifloat fA short fB e Parameter fA float point value fB float point value e Return Return float point value nA nB ISO LD User s Manual Ver 2 4 02 12 04 50 A 2 3 LD GetVersion e Description Obtain the software version e Syntax WORD LD GetVersion void e Parameter void e Return LIB version information For example If 101 hex is return it means driver version is 1 01 A 2 4 LD CheckBoard e Description This function checks the hardware board If all check
13. ISO LD Users Manual Warranty All products manufactured by ICP DAS are warranted against defective materials for a period of one year from the date of delivery to the original purchaser Warning ICP DAS assumes no liability for damages consequent to the use of this product ICP DAS reserves the right to change this manual at any time without notice The information furnished by ICP DAS is believed to be accurate and reliable However no responsibility is assumed by ICP DAS for its use or for any infringements of patents or other rights of third parties resulting from its use Copyright Copyright 2003 by ICP DAS Co LTD All rights reserved worldwide Trademark The names used for identification only may be registered trademarks of their respective companies ISO LD User s Manual Ver 2 4 02 12 04 1 Contents GENERAL INFORMATION oe ees se sees sees ee es ees sk ee ke ee ke ee 4 tT INTRODUCTION ED SE DE ee De eege 4 T2 FEATURES Ee 4 1 3 SPECIFICATIONS 222 kes ate a a e lags O N th 4 1 4 GENERAL SPECIFICATIONS amp beid Es SESSE ER ee see dee Vee Ges Seg SeSe EER se 6 1 5 PRODUCT CHECK LIST ee Ge 6 HARDWARE CONFIGURATION ees esse ees ee ee se eek kaas ee 8 2 1 THE BLOCK DIAGRAMS EE Eege 8 2 1 1 Eight channels of isolated digital inp Ut 9 2 1 2 Seven channels of isolated O C output ee ee Re ER Re 9 2 1 3 Eight channels of TTL LED indicator ees ee se se ee ee RR Ge 9 2 1 4 Two channels of AD SE E
14. LD User s Manual Ver 2 4 02 12 04 58 ActiveError OK A 2 19 LD_SetLedConfiguration Description Set the BASE and DELTA of TTL LED indicator Refer to Sec 2 1 3 for details Syntax WORD LD_SetLedConfiguration WORD wBase WORD wDelta Parameter wBase BASE wDelta DELTA BASE DELTA 7 must small than 255 Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 20 LD _ReadLedConfiguration Description Read back the BASE and DELTA of TTL LED indicator from the embedded controller Refer to Sec 2 1 3 for details Syntax WORD LD_ReadLedConfiguration WORD wBase WORD wDelta Parameter wBase address of wBase wDelta address of wDelta Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 59 A 2 21 LD WriteDaBias e Description Set the 12 bits DA bias voltage output Refer to Sec 2 1 4 for details Syntax WORD LD WriteDaBias WORD wDa e Parameter wDa 12 bits data write to DA 074096 e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 22 LD ReadDaBias e Description Read back the 12 bits DA bias data from the embedded controller Refer to Sec 2
15. S ee ale Relea Dd 10 22 BOARD TEEN 12 2 3 IRQ CHANNEL SELECTION ees ees ee ee ee ee se ee ee ee ee ee ee ee ee ee ee 13 2 4 VO BASE ADDRESS SETTING esse ee sees ee ee se ee ees ee ee ee ee ee ee ee 13 2 5 CONNECTOR EE 14 2 6 1 CNI Connector ee Ge doves ede ee Age ee oge ee ee GEN ee 14 AO END EE 15 2 6 3 CN3 EE Eege 16 2 6 SIGNAL CONNECTION EE 16 2 7 1 Digital Output Connection Es NE EE GE noes cea 17 2 7 2 Digital Input Connection EN SE EG a ale 17 2 7 3 Analog EIERE 18 2 7 4 TTL LED Indicator Connection 19 28 GALIBRATION si EE 20 FUNCTION OPERATION OF LOADCELL 21 3 1 WHAT IS LOADCELL Ee 21 3 2 LOADCELL INPUT CONNECTION ese eene ee ie sonra SeSe ee 21 3 3 HOW TO GET DATA FROM LOADCELL assecca 22 3 4 WHY NEED 2 CHANNELS ee ee ee ee es ee ee see ee ee ee ee dee ee ee ee ee ee ee ee ee ee ee 24 SOFTWARE INSTALLATION esse ees ees kke kk ee ee 25 INSTALLATION DLL DRIVER G seerne 26 ISO LD User s Manual Ver 2 4 02 12 04 2 5 1 TABLE OF ERRORCODE AND ERRORSTRING ee ee 26 5 2 DLL FUNCTION DEFINITION AND DESCRIPTION ee sees ee ee ss ee 27 5 2 1 ISOLD GetDIIVersion Ge SS Ge ecco nace aes erne renser 28 5 2 2 SOLD ActveBo td EE 28 5 2 3 SOLD ER EEN 29 5 2 4 ISOLD IsBoardAcCtive GE GE GE GE ke 30 5 2 5 OLD GOTO GI II oe EE GE RE pre Saat 30 5 2 6 ISOLD SetDIM ode HE eene toes ie Ge SG 31 5 2 7 ISOLD GetDlMod EE 31 EE 32 5 2 9 ISOLD ReadbackDO re EI ED ED cle 33
16. _NoError OK ISOLD_BoardlsNotActive The board is not activated ISOLD_ExceedMaxBoardNum wBoardNo exceeds the maximum board ISO LD User s Manual Ver 2 4 02 12 04 29 number 7 5 2 4 ISOLD_IsBoardActive Description Obtain the information about the specific board is active or not Syntax WORD ISOLD IsBoardActive WORD wBoardNo Parameter BoardNo input ISO LD board number Return 0 means the board is inactive 1 means the board is active 5 2 5 ISOLD_GetBoardinf Description Obtain the information of the current active boards which include base address and IRQ number Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD_GetBoardinf WORD wBoardNo WORD wBase WORD wlrq Parameter wBoardNo input ISO LD board number wBase output base address of this board wlrq output IRQ number of this board Return ISOLD_NoError OK ISOLD_BoardlsNotActive The board is not activated ISO LD User s Manual Ver 2 4 02 12 04 30 SOLD ExceedMaxBoardNum wBoardNo exceeds the maximum board number 7 Note Refer to DEMO1 for more information 5 2 6 ISOLD SetDIMode e Description Configure the working mode of 8 isolated digital input channels The setting of Bit 0 7 is corresponding to the channel 0 7 respectively If the corresponding bit is set to 0 that means the corresponding DI channel is working on active Low mode On the other hand i
17. alling this function input Yes No output No Function definition WORD ISOLD GetDllVersion WORD ISOLD ActiveBoard WORD wBoardNo WORD wBase WORD wlrg WORD ISOLD CloseBoard WORD wBoardNo WORD ISOLD lIsBoardActive WORD BoardNo WORD ISOLD GetBoardinf WORD BoardNo WORD wBase WORD wilrg WORD ISOLD SetDIMode WORD wBoardNo BYTE bDIMode WORD ISOLD_GetDIMode WORD wBoardNo BYTE bDIMode WORD ISOLD DO WORD wBoardNo BYTE wDO WORD ISOLD ReadbackDO WORD wBoardNo BYTE bDO WORD ISOLD DI WORD wBoardNo BYTE bDI WORD ISOLD GetLatchDI WORD wBoardNo BYTE bDI WORD ISOLD ClearLatchDI WORD wBoardNo BYTE bChannel WORD ISOLD SetChannelConfig WORD wBoardNo WORD wType WORD wCH WORD wGain ISO LD User s Manual Ver 2 4 02 12 04 27 WORD ISOLD GetChannelConfig WORD wBoardNo WORD wType WORD WwWCH WORD wGain WORD ISOLD SetDABias WORD wBoardNo WORD wDA WORD ISOLD GetDABias WORD wBoardNo WORD wDA WORD ISOLD ADPollingHex WORD wBoardNo WORD wData WORD ISOLD ADPolling WORD wBoardNo float fData WORD ISOLD ADsPacerHex WORD wBoardNo WORD wData WORD wNum WORD wSamplingRate WORD ISOLD ADsPacer WORD wBoardNo float fData WORD wNum WORD wSamplingRate WORD ISOLD SetLED WORD wBoardNo BYTE bBase BYTE bDelta WORD ISOLD GetLED WORD wBoardNo BYTE bBase BYTE bDelta 5 2 1 ISOLD GetDllVersion
18. ameter wDi address of wi Return ActiveError this board must call LD CheckBoard first ISO LD User s Manual Ver 2 4 02 12 04 55 TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 13 LD ClearLatchDi Description Clear the latch states of 8 channels isolated DI Bit O channel 0 bit_1 channel_1 bit 7 channel 7 Only 8 channels isolated DI only 8 bits are enough This function will return the current state of Dls If bit 0 clear the latch state bit 1 no clear Syntax WORD LD ClearLatchDi WORD wData Parameter wData address of wData Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 14 LD_ReadSystemStatus Description Obtain the system status Syntax WORD LD ReadSystemStatus WORD wStatus Parameter wStatus address of wStatus Bit0 1 CMD FIFO ready Bit1i 1 DATA FIFO ready Bit2 1 DATA FIFO empty ISO LD User s Manual Ver 22 4 02 12 04 56 Bit3 1 AD is busy now Return ActiveError this board must call LD CheckBoard first ActiveError OK A 2 15 LD SetChannelGain Description Set the gain factor of AD channel 0 or channel 1 After this function theMUX will select this gain and the channel into AD converter Syntax WORD LD SetChannelGain WORD wChannel WORD Gain Parameter wChannel 0 AD channel O ge
19. ax WORD ISOLD SetChannelConfig WORD wBoardNo WORD wtType WORD wCH WORD wGain Parameter wBoardNo input ISO LD board number wType input Board type 0 ISO LDL 1 ISO LDH wCH input AD channel number 0 channel O general 1 channel 1 loadcell wGain input Gain mode 0 4 Refer to Sec 1 3 for more information Return SOLD_NoError OK ISO LD User s Manual Ver 2 4 02 12 04 35 SOLD BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error ISOLD_ ParameterError Parameter is null out of range or invalid Note Refer to DEMO5 DEMO 9 for more information 5 2 14 ISOLD GetChannelConfig Description Obtain the information of analog input configuration for ISO LD board including AD channel number and gain mode Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD SetChannelConfig WORD wBoardNo WORD wType WORD wCH WORD wGain Parameter wBoardNo input ISO LD board number wType output address of wType wCH output address of wCH wGain output address of wGain Return SOLD NOoError OK SOLD BoardlsNotActive This board is not activated SOLD TimeOut Execute command timeout maybe hardware error 5 2 15 ISOLD SetDABias Description Set the 12 bits DA voltage output for DC bias adjustment Refer to Sec 2 1 4 for more information Please call ISOLD ActiveBoard first before using this functi
20. can set BASE 123 and DELTA 10 then LED1 will ON if AD gt 123 LED2 will ON if AD gt 123 10 LED3 will ON if AD gt 123 20 ISO LD User s Manual Ver 2 4 02 12 04 9 LED4 will ON if AD gt 123 30 LED5 will ON if AD gt 123 40 LED6 will ON if AD gt 123 50 LED7 will ON if AD gt 123 60 LED8 will ON if AD gt 123 70 Because the embedded controller is always performing AD conversion the AD value will be compared to BASE and DELTA Therefore the LEDs show the AD magnitude in real time This is special designed for people to monitor the measurement process In some real world application such as dynamic force monitoring system the AD magnitude is dynamic changed and these LEDs will also dynamically show the AD magnitude for people to watch Note that if the AD channel changed these LEDs will also display the value of the new AD channel Also if the gain or DC bias is changed these LEDs will be changed too 2 1 4 Two channels of AD When we measure force another analog signal may need to be monitored as a function of force such as position or distance In such a system the user can use channel 1 to measure loadcell analog input and use channel 0 to measure the relative indicator as shown in Figure 2 2 12V GND Channel 0 Channel 1 Controller Figure2 2 The block diagram of analog input The channel 0 AD is directly connected to MUX for general analog input measurement The channel 1 AD strain gau
21. ctiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 10 LD ReadDo e Description Read back the O C DO value from the embedded controller e Syntax WORD LD ReadDo WORD wDo e Parameter wDo address of wDo e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 54 A 2 11 LD ReadDi Description Read in the digital value from the 8 channels of isolated DI Bit O channel 0 bit 1 channel 1 bit 7 channel 7 Only 8 channels isolated DI only 8 bits are enough This function will return the current state of Dis The working mode of DI introduced in Sec A 2 7 will not take effect on this function Syntax WORD LD ReadDi WORD wDi Parameter wDi address of wDi Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 12 LD ReadLatchDi e Description Read the latch states of 8 channels isolated DI Bit O channel 0 bit_1 channel_1 bit 7 channel 7 Only 8 channels isolated DI only 8 bits are enough This function will return the current state of Dis The working mode of DI introduced in Sec A 2 7 will take effect on this function Syntax WORD LD ReadLatchDi WORD wDi Par
22. d please contact your local field agent Save the shipping materials and carton in case you want to ship or store the product in the future ISO LD User s Manual Ver 2 4 02 12 04 7 2 Hardware Configuration This section will describe the hardware setting of the ISO LD which includes ISO LDH and ISO LDL 2 1 The Block Diagrams The block diagram of ISO LD series is shown in below Photo 6 Isolated 7 O E isolated Digital Digital Output analog inpu Analog Input Low gain 1 2 4 8 ASe High Gain 1 10 100 1000 Programmable loadcell offset No Ee anal Excitation Voltage output Block Diagram For loadcell Figure2 1 The block diagram of ISO LD The Host PC X86 can send one control command to the queue through ISA bus The embedded controller will automatically read and execute this command The results of this command will also store in the data FIFO therefore the X86 can read back and analysis the results through ISA bus The Host PC X86 site and the embedded controller is fully isolated Therefore the noise from external device will be isolated from X86 this will improve the Host PC reliability In general the Host PC only needs to send out command and then the embedded controller will handle the control work in details The features of command set system are given as following 1 reduce X86 load 2 easy programming 3 OEM ODM special require function is easy to implement ISO LD User s Manual
23. dicator ISO LD User s Manual Ver 2 4 02 12 04 24 4 Software Installation The ISO LD can be used in DOS and Windows 98 Me NT 2000 XP For these Windows operation systems the recommended installation steps are given as below Step 1 Step 2 Step 3 Step 4 Step 5 Insert the companion CD into the CD ROM driver and wait a few seconds until the installation program starts automatically If it cannot be started automatically for some reasons please double click the file NAPDOS AUTO32 EXE in this CD Click the first item Toolkits Software Manuals Click the item ISA Bus DAQ Card Click ISO LD LDL LDH Click install Toolkit for Windows 98 Or Me NT 2000 XP DOS Then the InstallShield will start the driver installation process to copy the related material to the indicated directory and register the driver on your computer The driver target directory is as below for different system Windows NT 2000 WINNT SYSTEM32 DRIVERS Windows 98 Me XP WINDOWS SYSTEM32 DRIVERS ISO LD User s Manual Ver 2 4 02 12 04 25 5 Installation DLL Driver The DLL driver is the collection of function calls of the ISO LD cards for Windows 98 Me NT 2000 XP system The application structure is presented as following figure The user application program developed by designate tools like VB Delphi and Borland C Builder can call ISOLD DLL driver in user mode And then DLL driver will bypass the
24. dule In other words it saves your money and space The special features are giving as following 1 2 Features ISA BUS interface 500Vrms photo isolation protection One strain gauge input channel channel 1 One analog input channel channel 0 Build in 1K bytes FIFO Provide excitation voltage DC12V 50mA for loadcell instrument The input gain of strain gauge can be up to 40 000 Programmable 12 bit resolution DC offset voltage 0 4 096V A built in second order low pass filter Direct connection to strain gauge type loadcell 8 channels 12 24V isolated digital input 7 channels isolated open collector NPN type digital output Programmable 8 bits LED indicator for analog input signal magnitude 1 3 Specifications Analog Inputs A D converter with resolution 12 bits unipolar Conversion rate 20KS s max Input Impedance 10 000M Q 6pF Recommend warm up time 10 minutes ISO LD User s Manual Ver 2 4 02 12 04 4 Gain Mode ISO LDH Input Range Gain Value Mm Analog input range Channel 0 Input Range V 1 0 10 10 0 gt 1 100 0 gt 0 1 1000 Gain Value 0 gt 0 01 Input Range mV 400 0 gt 37 5 4 000 0 15 Gain Mode 40 000 ISO LDL Input Range Mm Analog input range Channel 0 Gain Value 0 12 75 Input Range V 1 0 10 0 5 0 2 5 Gain Value 0 1 25 Input Range mV
25. ess of wData which store the AD HEX data 12 bits Return SOLD NOoError OK SOLD BoardlsNotActive This board is not activated SOLD TimeOut Execute command timeout maybe hardware error Note Refer to DEMO5 for more information 5 2 18 ISOLD_ADPolling Description Read a decimal value of current active AD from the analog input channel The active AD is set by ISOLD_SetChannelConfig This subroutine performs the AD conversion by polling one time Refer to Sec 2 1 4 for details Please call ISOLD_ActiveBoard first before using this function Syntax WORD ISOLD_ADPolling WORD wBoardNo float fData Parameter wBoardNo input ISO LD board number fData output address of fData which store the AD data 12 bits Return SOLD_NoError OK ISO LD User s Manual Ver 2 4 02 12 04 38 SOLD BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error Note Refer to DEMO6 for more information 5 2 19 ISOLD_ADsPacerHex Description Read multiple HEX values of current active AD from the analog input channel The active AD is set by ISOLD_SetChannelConfig This subroutine performs the AD conversions by pacer trigger Refer to Sec 2 1 4 for details Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD_ADsPacerHex WORD wBoardNo WORD wData WORD wNum WORD wSamplingRate Parameter wBoardNo input ISO LD boa
26. et the BASE and DELTA configuration of TTL LED indicator Refer to Sec 2 1 3 for details Syntax ISO LD User s Manual Ver 2 4 02 12 04 40 WORD ISOLD SetLED WORD wBoardNo BYTE bBase BYTE bDelta Parameter wBoardNo input ISO LD board number bBase input AD base value bDelta input AD delta value bBase bDelta 7 must small than 255 Return SOLD NOoError OK SOLD BoardlsNotActive This board is not activated SOLD TimeOut Execute command timeout maybe hardware error SOLD ParameterError Parameter is null out of range or invalid 5 2 22 ISOLD GetLED Description Get the AD BASE and DELTA configuration value of TTL LED indicator from the embedded controller of ISO LD board Syntax WORD ISOLD_GetLED WORD wBoardNo BYTE bBase BYTE bDelta Parameter wBoardNo input ISO LD board number base output address of bBase bDelta output address of bDelta Return SOLD NOoError OK SOLD BoardlsNotActive This board is not activated SOLD TimeOut Execute command timeout maybe hardware error ISO LD User s Manual Ver 2 4 02 12 04 41 6 Demo Programs for Windows All of demo programs will not work normally if DLL driver would not be installed correctly During the installation process of DLL driver the install shields will register the correct kernel driver to the operation system and copy the DLL driver and demo programs to the correct position based on the driver software pac
27. etween stress gauge and ISO LDH L 3 3 How to get data from Loadcell Below is the procedure for how to get data from loadcell by ISO LDH L which include 1 amplify the raw signal 2 bias the signal 3 PGA amplifier for final dada A Amplify the raw signal The signal output of loadcell is very small and the typical output is about several mV For this reason the amplifier is needed for enlarge the input signal by amplifier gain G1 which is typical about hundreds to thousands This is essential step for accuracy measurement B Bias voltage The signal of loadcell output is going with common voltage when we want to measure the dynamic variation of the force After amplified the signal the common voltage may cause the signal level to be exceeding the measurable dynamic range For eliminating the common mode voltage effect an extra bias voltage is provided to adjust the AC signal of loadcell signal into the measurable range C Amplifier the bias voltage In ISO LDH L board we use two stage amplifiers for flexible signal condition The first amplifier which is fixed gain with digital controllable bias voltage can adjust the input signal from loadcell to the suitable range for next amplifier The ISO LD User s Manual Ver 2 4 02 12 04 22 next amplifier is controllable from 1 10 100 1000 for ISO LDH or 1 2 4 8 for ISO LDL When measuring the dynamic variation of signal we may amplify the signal as large as p
28. f the corresponding bit is set to 1 that means the corresponding DI channel is working on active HIGH mode Please call ISOLD_ActiveBoard first before using this function Syntax WORD ISOLD_SetDIMode WORD wBoardNo BYTE bDIMode Parameter wBoardNo input ISO LD board number bDIMode input working mode of 8 isolated digital input channels e Return ISOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMOS for more information 5 2 7 ISOLD_GetDIMode e Description Get the working mode information of 8 isolated digital input channels from ISO LD board Please call ISOLD ActiveBoard first before using this ISO LD User s Manual Ver 2 4 02 12 04 31 function e Syntax WORD ISOLD GetDIMode WORD wBoardNo BYTE bDIMode Parameter wBoardNo input ISO LD board number LDIMode output address of wDIMode e Return ISOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout 5 2 8 ISOLD_DO Description Output digital value through 7 isolate O C digital output channels Bit 076 functions the channel 0 6 respectively Bit O means Digital output is OFF and Bit 1 means digital output is ON Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD_DO WORD wBoardNo BYTE bDO Parameter wBoardNo input ISO LD board number bDO input
29. function call to Windrvr6 sys to access the hardware system VB Delphi BCB program d user mode ISOLD DLL Windrvr6 sys for NT 98 Me 2000 XP IE Ed ISO LD hardware kernel mode 5 1 Table of ErrorCode and ErrorString Error Code Error ID Comment ISOLD NOError OK ISOLD ActiveBoardError This board can not be activated SOLD ExceedMaxBoardNum The board number exceeds the maximum board number 7 SOLD BaseOverRange Base address is over range ISOLD BaseOverlap Base address overlap ISO LD User s Manual Ver 22 4 02 12 04 26 ISOLD DriverNoOpen Kernel driver can t be found SOLD BoardlsNotActive The board is not activated SOLD ParameterError Parameter is null or out of range ISOLD_IrqNumError IRQ number is illegal ISOLD_BoardlsActive Board is active now ISOLD_ TimeOut Execute command timeout 5 2 DLL Function Definition and Description All of the functions provided for ISO LD are listed in the following table and the detail information for every function will be presented in the following sub section However in order to make the description simplify and clearly the attribute of the input and output parameter of the function is indicated as input and output respectively as shown in following table Keyword Set parameter by user before Get the data from this parameter calling this function after c
30. ge analog input connect to G1 amplify in first The gain factor G1 can be set from 100 to 10000 by adjusting variable resistor VR2 If VR2 is fixed the G1 is fixed In the normal condition the G1 is recommended to be set as 400 This is the base parameter of gain value ISO LD User s Manual Ver 22 4 02 12 04 10 in Strain gauge input range The 12 bits DAC can provide OV to 4 096V DC bias offset voltage by software This function provides a way to remove the DC level offset and then the G2 will only amplify the AC signal Besides the G2 is PGA Programmable gain amplifier In ISO LDL G2 can be configured as 1 2 4 8 In ISO LDH G2 can be configured as 1 10 100 1000 The ADC is 12 bits resolution for 0 to 10V range in unipolar The processes of analog input measurement for channel 0 and channel 1 are shown in below The steps for channel 0 AD conversion is given as following 1 select channel 0 2 set G2 of PGA 3 performance the AD conversion The steps for channel 1 AD conversion is given as following 1 set G1 in proper value use VR2 not software programmable 2 select channel 1 3 set DAC to remove the DC level of AD channel 1 4 select G2 to amplify the AC signal 5 5 performance the AD conversion Note that the result of analog input value is always compared to BASE and DELTA to indicate the analog input level refer Sec 2 1 3 In summary A D Offset and gain adjustment of the
31. isolated digital input latch states from hardware Bit 0 7 depicts the status of the channel 0 7 respectively The DI working mode introduced in Sec 5 2 6 will not take effect on this function Please call ISOLD_ActiveBoard first before using this function Syntax WORD ISOLD GetLatchDI WORD wBoardNo BYTE bDI Parameter wBoardNo input ISO LD board number bDI output address of bDI Return ISOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMOS for more information 5 2 12 ISOLD ClearLatchDI Description Clear the latch states of 8 isolated digital input channels Bit 0 7 is the status of channel 0 7 respectively bit 0 means the latch state is clear bit 1 means the latch state is not clear Please call ISOLD ActiveBoard ISO LD User s Manual Ver 22 4 02 12 04 34 first before using this function Syntax WORD SOLD ClearLatchDI WORD wBoardNo BYTE bChannel Parameter wBoardNo input ISO LD board number bChannel input the latch states Return SOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout Note Refer to DEMO for more information 5 2 13 ISOLD_SetChannelConfig Description Set the channel configuration for analog input signal which includes AD channel number and Gain mode Please call ISOLD ActiveBoard first before using this function Synt
32. kBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 61 A 2 25 LD ReadFifo e Description Read 16 bits data from FIFO This function will wait for data ready until timeout e Syntax WORD LD ReadFifo WORD wFifoData e Parameter wFifoData 16 bits FIFO data e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 26 LD ClearFifo e Description Clear the on board 1K FIFO e Syntax WORD LD ClearFifo void e Parameter void e Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 62 Appendix B IO Base Register Address Input Output Read System Status Write to COMMAND FIFO Read DATA FIFO Clear DATA FIFO amp COMMAND FIFO System Status Byte Description Bit 0 1 COMMAND FIFO not full Bit 1 1 DATA FIFO not empty Bit 2 1 COMMAND FIFO is empty Bit 3 1 AD is busy 1 DATA FIFO is half full 1 DATA FIFO is full ISO LD User s Manual Ver 2 4 02 12 04 63
33. kage you have selected Win98 Me NT win2000 XP After driver installation the related demo programs and development library and declaration header files for different development environments are presented as follows Demo demo program BCB3 gt for Borland C Builder 3 ISOLD H gt Header file ISOLD LIB gt Linkage library for BCB only Delphi5 gt for Delphi 5 ISOLD PAS gt Declaration file VB6 gt for Visual Basic 6 ISOLD BAS gt Declaration file The list of demo programs DEMO1 Function ISOLD_ActiveBoard demo DEMO2 Digital output DEMO3 Digital input DEMO4 Digital VO DEMO5 A D Polling HEX DEMO6 A D Polling DEMO7 A D Pacer HEX DEMO8 A D Pacer DEMOS9 A D Pacer amp Digital VO DEMO10 Two boards Digital VO DEMO11 Two boards A D Pacer ISO LD User s Manual Ver 2 4 02 12 04 42 The brief introduction of demo programs DEMO1 Demo is the example for starting ISO LD board User needs to configure the Base Address and IRQ based on the hardware switch setting After choosing the correct base address and IRQ setting user can click the Active button to let the hardware ISO LD board work and see the hardware information in the GetBoardInf window Besides user also can click Inactive to release the hardware resource from operation system ISO LD GetBoardinf Board Base Address IRQ ECHVE TE g Active Active Active
34. nd VR2 is used to configure the G1 gain from 100 to 10000 Note that only the Relative Value is interesting for analog input calibration And it must be performed based on their G1 gain setting Therefore the Relative Value calibration is more important than Real Value under the consideration of strain gauge application ISO LD User s Manual Ver 2 4 02 12 04 20 3 Function Operation of Loadcell 3 1 What is Loadcell Loadcell is one kind of bridge sensor and stands as a passive resistant sensor The resistance value is dependent on the change of the force Figure 3 1 depicts the wire connection of stress gauge sensor The excitation source may be voltage or current source The V and V is the differential voltage output whose value is proportional to the force Typically the difference between V and V is about several mV signal level Excitation source V Excitation source Figure 3 1 the bridge sensor of stress gauge 3 2 Loadcell Input Connection The ISO LDH L can be connected to a loadcell which is powered by excitation voltage The ISO LDH L has the on board excitation 12V voltage source for loadcell excitation source The V V can be used to connect to the input Vin Vin of analog input channel 1 on ISO LDH L The wire connection method is demonstrated in Figure 3 2 ISO LD User s Manual Ver 2 4 02 12 04 21 12V Vin Vin GND Figure 3 2 wire connection b
35. neral 1 AD channel 1 loadcell wGain ISO LDH 0 Gain 1 1 Gain 10 2 Gain 100 3 Gain1000 ISO LDL O Gain 1 1 Gain 2 2 Gain 4 3 Gain 8 Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 16 LD ReadChannelGain Description Obtain the gain factor of AD channel 0 or channel 1 Syntax WORD LD ReadChannelGain WORD wChannel WORD wGain Parameter wChannel addresss of wChannel wGain address of wGain ISO LD User s Manual Ver 2 4 02 12 04 57 Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 17 LD SetPacerlimer Description Set the value of pacer timer Syntax WORD LD SetPacerlimer WORD wCount Parameter wCount Pacer Sampling Rate 1000000 wCount 1 Hz 49 gt 20K 99 10K 499 gt 2kK 999 gt 1K 1999 gt 500 Hz Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 18 LD ReadPacerTimer Description Read back the value of pacer timer from the embedded controller Syntax WORD LD_ReadPacerTimer WORD wCount Parameter wCount address of wCount Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ISO
36. on ISO LD User s Manual Ver 22 4 02 12 04 36 Syntax WORD ISOLD SetDABias WORD wBoardNo WORD wDA Parameter wBoardNo input ISO LD board number wDA input 12 bits data 0 4095 Return SOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error Note Refer to DEMO7 and DEMO8 for more information 5 2 16 ISOLD_GetDABias Description Obtain the information of the 12bits DA bias voltage output setting from the embedded controller of ISO LD board Refer to Sec 2 1 4 for details Please call ISOLD_ActiveBoard first before using this function Syntax WORD ISOLD_SetDABias WORD wBoardNo WORD wDA Parameter wBoardNo input ISO LD board number wDA output address of wDA Return SOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error 5 2 17 ISOLD_ADPollingHex Description ISO LD User s Manual Ver 2 4 02 12 04 37 Read a 12 bit HEX value from the specified analog input channel The active AD is setting by ISOLD SetChannelConfig This subroutine performs the AD conversion by polling one time Refer to Sec 2 1 4 for details Please call ISOLD ActiveBoard first before using this function e Syntax WORD ISOLD ADPollingHex WORD wBoardNo WORD wData e Parameter wBoardNo input ISO LD board number wData output addr
37. ossible without clamping The application diagram of two stage amplifiers is shown in Figure 3 3 Vin Fix Gain Digital Control Figure 3 3 Two Stage amplifiers structure for ISO LDH L D Application illustration for amplifier and bias voltage setting The following is the application example for the case of the loadcell signal 2mV with 0 1mV Vp p and ISO LDH selected for loadcell signal acquisition The first amplifier is fixed as the gain 400 V V factory setting For geting the maximum dynamic readable range we set the second amplifier gain as 100 to get the dynamic signal range in 4V Vp p 0 1mV 400 first amplifier 100 second amplifier 4V If the AD input range of ISO LDH is configured to be 0 to 10V we should shift the common voltage to be about 5V because of mean level of DC signal According to the second amplifier is set as gain 100V V therefore the common mode voltage of first amplifier need to be 50mV before the second stage amplifying To meet this requirement the bias voltage needs to be set as ISO LD User s Manual Ver 2 4 02 12 04 23 750mV as description in below 2mV 400 750mV 50mV 50mV 100 5V 3 4 Why need 2 channels We often use another analog indicator like position or distance to show the physical change by the force when measuring the strain gauge In such a system the user can use channel_1 to measure loadcell analog input and use channel 0 to measure the relative in
38. rd number wData output starting address of wData which store the AD HEX data 12 bits wNum input number of AD conversions will be performed wSamplingRate input AD sampling rate Hz Return SOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error ISOLD_ ParameterError Parameter is null out of range or invalid Note Refer to DEMO7 for more information ISO LD User s Manual Ver 2 4 02 12 04 39 5 2 20 ISOLD ADsPacer Description Read multiple decimal values of current active AD from the analog input channel The active AD is set by ISOLD_SetChannelConfig This subroutine performs the AD conversions by pacer trigger Refer to Sec 2 1 4 for details Please call ISOLD ActiveBoard first before using this function Syntax WORD ISOLD ADsPacer WORD wBoardNo float fData WORD wNum WORD wSamplingRate Parameter wBoardNo input ISO LD board number fData output starting address of wData which store the AD data 12 bits wNum input number of AD conversions will be performed wSamplingRate input AD sampling rate Hz Return SOLD_NoError OK ISOLD_BoardlsNotActive This board is not activated ISOLD_ TimeOut Execute command timeout maybe hardware error ISOLD_ ParameterError Parameter is null out of range or invalid Note Refer to DEMO8 for more information 5 2 21 ISOLD_SetLED Description S
39. rrect signal connection skill because it plays an important role for sending and receiving data accurately According to ISO LD User s Manual Ver 2 4 02 12 04 16 the different applications the wire connection may be different as shown in the following subsection 2 7 1 Digital Output Connection Figure 2 9 presents the wire connection for digital output from ISO LD Note that the current limitation of isolated open collector NPN digital output is 100mA TEE eee PT te PONS PET AUT a CN2 i i i 7 DO COM I AI l 8 1 DO 0 vy E Ee Load I i 1 lt 100mA De l 12V 24V IT I i i 20 DO GND i ISO LD Figure 2 9 Digital Output Connection 2 7 2 Digital Input Connection The ISO LDH L support 8 isolated digital input The input signal can work from 12 to 24V These signals are suitable for connecting with relay or PLC digital output The 8 digital input signals may programmable to active high or active low for different input signal application Each input has corresponding latched input with different input mode Figure 2 10 depicts the wire connection for Digital input 0 3 DIO DI2 And Figure 2 11 illustrates the wire connector for digital input 3 7 DI3 DI7 which use the common digital source ISO LD User s Manual Ver 2 4 02 12 04 17 CN2 5V DIO 1 DIO DIO 14 Figure 2 11
40. rror this board must call LD CheckBoard first ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 52 A 2 7 LD WriteDiMode Description Set the working mode of 8 channels isolate DI Bit 0 set channel 0 bit 1 set channel 1 bit7 set channel 7 Only 8 channels isolated DI only 8 bits are enough If Bit 0 DI is working in active HIGH mode If Bit 1 DI is working in active LOW mode Syntax WORD LD WriteDiMode WORD wDiMode Parameter wDiMode working mode for the 8 channels isolated DI Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK A 2 8 LD ReadDiMode Description Read back the working mode of 8 channels isolated DI from embedded controller Syntax WORD LD ReadDiMode WORD wDiMode Parameter wDiMode address of wDiMode Return ActiveError this board must call LD CheckBoard first TimeOut check board timeout maybe base address or hardware error ActiveError OK ISO LD User s Manual Ver 2 4 02 12 04 53 A 2 9 LD WriteDo e Description Set the output value of 7 channels isolated O C DO Bit 0 set channel 0 bit 1 set channel 1 bit 6 set channel 6 respectively Only 7 channels isolated O C DO only 7 bits are enough If bit 0 DO is OFF If bit 1 DO is ON e Syntax WORD LD WriteDo WORD wDo e Parameter wDo set O C DO value e Return A
41. s are OK this function actives this board This software can support 8 cards at most in one PC system The program must call this function to check each board firstly and then call LD ActiveBoard to select which board is active All the other functions are referred to the active board only If only one board is used the unique board will be active after this function is called Syntax WORD LD_CheckBoard WORD wBoard WORD wBase WORD wirq Parameter wBoard board number 0 7 wBase board base address wlrq board IRQ munber no support in this version software e Return BoardError validate board number from 0 to 7 IrqError invalidate IRQ number CheckError check board error maybe base address error ISO LD User s Manual Ver 2 4 02 12 04 51 TimeOut check board timeout maybe base address or hardware error NoError OK A 2 5 LD_ActiveBoard Description Active the specific board defined by wBoard Syntax WORD LD ActiveBoard WORD wBoard Parameter wBoard board number 0 7 Return BoardError validate board number from 0 to 7 ActiveError this board must call LD CheckBoard first ActiveError OK A 2 6 LD ReadActive Description Obtain the information of current active board Syntax WORD LD_ReadActive WORD wBoard WORD wBase WORD wirq Parameter WBoard board number 0 7 wBase address of wBase wlrq address of wirq Return BoardError validate board number from 0 to 7 ActiveE
42. tting 2 5 Connector Pin Assignment The ISO LD is eguipped with two sets of 9 pin and 25 pin D type female connectors for wire connection of the VO signal The connector s pin assignment is specified as follows 2 6 1 CN1 Connector CN1 is 9 pin D sub female connector for analog input output shown in Figure 2 6 The detail pin assignment is presented in Table 2 2 12V Excitation GND Excitation a fF Go N Figure2 6 Pin assignment CN1 ISO LD User s Manual Ver 2 4 02 12 04 14 Table 2 2 Pin assignment of CN1 CN1 pin assignment 12V DC Output Vin1 No Use No Use No Use GND Vin1 Vin0 No Use 2 6 2 CN2 Connector CN2 is 25 pin D sub female connector for Digital input output connector as shown in Figure 2 7 The detail pin assignment is provided in Table 2 3 Figure2 7 CN2 Connector ISO LD User s Manual Ver 2 4 02 12 04 15 Table 2 3 Pin assignment of CN2 CN1 pin assignment CN2 pin assignment DIO DIO DI1 DI1 DI2 DIS DI GOM DI3 DId DI5 DI6 DI7 DO COM DO GND DOO DO DO2 DO3 DO4 DOS DO6 12V DC 12V DC GND GND 2 3 4 5 6 7 8 2 6 3 CN3 Connector CN3 is10 pins male connector for 8 LEDs indicator application as shown in Figure 2 8 LED3 LED5 2 LED6 LED2 LED4 Figure2 8 CN3 Connector 2 6 Signal Connection This section will demonstrate the co
43. ware setting of Base Address 220h and IRQ 0 in ISO LD ADsPacer 4095 0 np Configure CR Board Gain Mode A ISO LDL 0 d 5 C 1S0 EXIT S Beek Data Number d Channel 256 Ho 1529 Channel 0 Sampling Rate 13 gt 983 C Channel 1 5000 Hz 14 gt 800 EH Figure 6 7 The form of demo 7 program DEMO8 A D Pacer Demo8 illustrates the A D Pacer function of ISO LD in decimal mode under the hardware setting of Base Address 220h and IRQ 0 ISO LD User s Manual Ver 2 4 02 12 04 46 ig ISO LD ADsPacer Configure Board Gain Mode ISO LDL 1 Em C ISO LDH Data Number Channel 256 Channel 0 Sampling Rate C Channel 1 5000 Hz Figure 6 8 The form of demo_8 program DEMOS9 A D Pacer and Digital VO Demo9 provides the demonstration for the A D Pacer and digital input and output function of ISO LD under the hardware setting of Base Address 220h and IRQ 0 w ISOLD ADsPacer amp DIO Base Acdress 220h IRQ 0 Analog Input Configure 107 Board Gain Mode op 0 E 180 _DF Data Number Channel 168 Channel0 Sampling Rate C Channeli 5000 Hz Digital Output Digital Input DO DO2 Dos DO4 DOS DOG Doo on ol on on ol ol ow DIO m D2 DB DI DIS D6 DI FEE HE oe ed SEE REESE S oF OFF OFF OFF orr o om EXIT Figure 6 9 The form of demo 9 program DEMO10 Two Boards Digital Input and Output
Download Pdf Manuals
Related Search