Software User Manual
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1. a list or specific location Advanced Click Next to continue Select Install the software automatically Recommended and click Next Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for e Expert 140 1000 Click Finish to close the wizard The Expert 1 O is now ready to use Each time a new Expert I O is attached MS Windows will display the Found New Hardware Wizard Follow the steps above for each occurrence Once the Found New Hardware Wizard is completed it will not be shown again for that Expert I O National Instruments LabView Driver To use the LabView driver you must first install the SDK as described above During the SDK installation the LabView driver will be placed in the directory you chose for the SDK install Simply unzip the LabView driver into Rev 2 4 1 6 10 a Daj ac Inc Expert I O Software User Manual your LabView instr lib directory and restart LabView From within LabView you can access full documentation and examples Application Programming Interface The following sections describe the API in detail Initialization These functions are used for initialization and cleanup Declarations are in eio_init h eioOpen Syntax int eioOpen void Description Initialize the API Call this function before communicating with any Expert I O units Parameters none Return Value eioSUCCESS No pro2. eioClaimInterfaceEz unsigned short Modelld unsigned int SerialNumber eioTHandle Handle Description This function is provided as a simpler alternative to eioClaimInterface It allows you to claim an interface by only providing model ID and serial number Using this method you don t need to scan the USB for descriptors The device s interface must be claimed before the device can be accessed Once a claimed interface is no longer needed it must be released If a device s interface has been claimed it can t be claimed again until it has been released Rev 2 7 1 6 10 a Daj ac Inc Expert I O Software User Manual Parameters Modelld The model ID for the device whose interface is to be claimed See the eioMID_EIOxx defines in eio prod _info h fora list of valid model ID s The model ID is also included in the hardware manual SerialNumber The serial number of the device whose interface is to be claimed Handle Upon successful return this will be a handle to the specified device If unsuccessful it will be NULL Return eioSUCCESS No problems eloDEVICE NOT FOUND Could not find the requested device eioUNABLE TO CLAIM INTERFACE The device was found but its interface could not be claimed A couple possible causes are not enough memory or the interface has already been claimed eioReleaselnterface Syntax int eioReleaseInterface eioTHandle Handle Descript
3. of interest Use ei oDAC_ALL to act upon all analog outputs Range The range can be set as follows Rev 2 13 1 6 10 EQ Dajac Inc Expert I O Software User Manual Setting Minimum Maximum V V eioDAC P5 0 5 eioDAC P10 0 10 eioDAC_N5 P5 5 5 eioDAC N10 P10 10 10 eioDAC 2N5 2P5 2 5 2 5 eioDAC 2N5_7P5 2 5 7 5 Count When the range is set this count will be loaded into the input and output registers Return eioSUCCESS No problems eljoERROR An error occurred eioDacGetRange Rev 2 Syntax int eioDacGetRange eioTHandle Handle int Dac int Range Description Get the current range of the specified analog output Parameters Handle The handle of the Expert I O device Dac The analog output port of interest Range Upon return this will contain the current range setting The description of the eioDacSetRange function lists the allowable range settings Return eioSUCCESS No problems eljoERROR An error occurred 14 1 6 10 a Daj ac Inc Expert I O Software User Manual Digital I O The digital I O interface declarations are in eio_dio h Using this interface it is possible to read the digital inputs and control the digital outputs Additionally this interface is used to control the programmable pull feature that allows programming pull ups and pull downs on the T O lines eioDioGet Syntax int ei
4. to the number of bits supported by the DAC and the current output range setting For example loading 128 into an 8 bit DAC whose range is OV to 5V results in a 2 5V level at the output If the range were 5V to 5V then the output voltage would be OV As can be seen zero count always results in the minimum output voltage and the maximum count always results in the maximum output voltage eioDacInOut Syntax int eioDacInOut eioTHandle Handle int Dac unsigned int Count Rev 2 9 1 6 10 a Daj ac Inc Expert I O Software User Manual Description Load a count into both the input and the output registers simultaneously The new voltage will appear at the analog output immediately Parameters Handle The handle of the Expert I O device Dac The analog output port to act upon Use ei oDAC_ ALL to change all analog outputs to the given value Count The value that will be loaded into the input and output registers Return eioSUCCESS gt No problems ejoERROR gt An error occurred eioDacin Rev 2 Syntax int eioDacIn eioTHandle Handle int Dac unsigned int Count Description Load a count into the input register The new voltage will not appear at the analog output until the count is transferred to the output register Parameters Handle The handle of the Expert I O device Dac The analog output port to act upon Use eioDAC_ALL to act upon all analog outputs Count The value
5. 5 EBT ee a alii 15 O 15 AAA A A ON 16 AA AS E E E E S E E E ta na A E 16 BEE d LO DA PENO EE A E E EE E E E E E TES 17 PIO BCPTOMR eddo a E T N EES 17 SIOE eprom W ritenersi a E A N R E a e ei 18 Motor Contr Olossssssississcccsstsssssssnsssessssssanssess deesscsnssesescsesstossessesssistssesssssssesensscvssosvesascnsdsosveesensssdessesoossees 19 A cade Sesteas soatesteauei A E A SEE E SREE E cess O EEEE 19 CIOMCGEEV CLO CITY a Mea aE eaaa Tada Eaa Taar N E aa N EEE A 19 eio Me SetBrake Stal Enron da 20 cioMcGetBrake Tatin ii ad ii ETOR 21 EBT E E aa A 21 e1oMcSetCurrent Threshold ayra ies did 22 erioMecGetCurrentThr diari 22 A NY 23 CLOP ONL GEES CATS ia uu TO 23 eloPollGetStatus Still cardiacos caia beep db 24 Product INFOMATION iicicmmcoococinicnnrotericcncccronicnnd secsoscsensscbesessoosoceseeccccesoesooecsessdse dersessundsuns siuscseubesssedeves 25 e10ProdInfoGetFirmware Version ccccccccssesssccceccessssscceeccecesssnseeeecccssssseeeececesesseeeececesessaeececessenes 25 Rev 2 1 1 6 10 EQ Dajac Inc Expert I O Software User Manual eloProdInfoGetFirmware VersionEz Rev 2 2 1 6 10 a Daj ac Inc Expert I O Software User Manual Software The software distribution contains an application programming interface API source code examples and demo applications The API is within a dynamic link library DLL and allows the user to control every aspect of the Expert I O Since a DLL is used the API
6. Expert I O Software User Manual Revision 2 January 6 2010 2008 2010 Dajac Inc All Rights Reserved QDajac Inc www dajac com sales dajac com EQ Dajac Inc Expert I O Software User Manual Contents SOFTWARE coimas A diia 3 INSTALLATION oxiciadiniacacia ida va aiii 3 National Instruments LabView Drivet ssscccccccccccsscsssssscssssssssssssssssssesssssssssssssssssssscscccsssssssesces 4 APPLICATION PROGRAMMING INTERFACE ccocccococconococononononnocananonaronarcancnnrancnarancnaranrnananona 5 MMC AN ZAG OM AE a EEE A ERE IE O A OE 5 LOO PENti eds a E ii is 5 1 OC OS A EE EEEE E EAN A E E O aa EE aed 5 eioGetDeESCHptOT S pase a heed E a 6 SLOG Mo E E E rE E EAE 7 eo EE EZ nad E E S 7 ioRelease liter aCi E A A dad 8 Analog Input ADO ssisisssssssecsescasssssoccsssnsesssondassssesessvssnsnscesesasescenasscoassactsensasescuccsesounessacenasscesestunsaensaasid 8 CIOAAMCR edd C o mii EA A EE ibid 9 INICITO IDin LiL Ar DDAN EA E EE 9 B a D T AEE E T E E E A PEA AA T AA AEE EN 9 10D AC i E E EN EN EEE E DTE EET AEDE AEE E E TTA 10 croDacin Tod eei EER 11 CLO ACCES OU bisiieis se aidccacasasas da dd ceci 11 SLO ACSEL T cscs ida A E E EE ATE N E EN A Sivan da dota 12 coDacGe Clara A ON beaas 12 CIO DACSEtRAN GC nicas ida ies 13 ClO ACGEt RAN Ge ricas 14 Digital VO iseessecsssscssetsesessvascasdsasssssusassosasssssostenssasssasdcsecssacssvacsdesseassscnsasessonesedscsauseassaadesseessavsavecssessaasesss 1
7. L USB endpoint stall eioPS USB PID ERR USB PID error eloPS USB CRC5_ ERR USB CRCS error eloPS USB CRC16 ERR USB CRC16 error eioPS USB DFN8 ERR USB DFN8 error eioPS USB BTO ERR USB BTO error eioPS USB WRT ERR USB WRT error eioS USB OWN ERR USB OWN error eioPS USB BTS ERR USB BTS error eioPS USB CABLE DET USB cable has been detached eloPS GLOBAL WDT Watchdog timeout NumStatus Waiting Upon return this will be the number of status messages that are waiting to be returned by the Expert I O Return eioSUCcl ESS No problems eioERROR An error occurred eioPollGetStatusString Syntax char eioPollGetStatusString unsigned int Status Rev 2 24 1 6 10 a Daj ac Inc Expert I O Software User Manual Description Get a string that describes the status returned by the eioPol1lGetStatus function Parameters Status The status returned by eioPollGetStatus Return Upon return this will point to a null terminated string that describes the status The string must not be changed by the caller and could be modified by the next call to this function If a status string does not exist for the given status NULL will be returned Product Information The product information interface provides a way to query the Expert I O for product related information The interface is declared ineio prod_info h eioProdinfoGetFirmwareVersion Rev 2 Syntax in
8. blems eioERROR An error occured eioClose Syntax int eioClose void Description Call this function when it is no longer necessary to communicate with any Expert I O units Return eioSUCCESS No problems eljoERROR An error occured Rev 2 5 1 6 10 a Daj ac Inc Expert I O Software User Manual eioGetDescriptors Rev 2 Syntax int stdcall eioGetDescriptors eioTDescriptorGroup DescriptorGroup Description Get descriptors for all the Expert I O units attached to all the USB buses This function searches all the USB buses and returns a descriptor for each Expert I O device found Descriptors provide information about the devices found Parameters DescriptorGroup This is a pointer to a structure that holds a descriptor for every Expert I O device found Memory for each descriptor is allocated by this library The memory will be released when eioClose is called The descriptor memory is owned by this library and should not be modified by outside code The DescriptorGroup structure must be allocated prior to calling this function eioTDescriptorGroup is defined in eio_common h as follows typedef struct int NumDescriptors eloTDescriptor Descriptors eioTDescriptorGroup NumDescriptors is the number of descriptors contained in the group Descriptors is an array of the descriptors and eioTDescriptor is a structure defined in eio_common h typedef struct unsig
9. device Address The EEPROM address at which to read NumBytes The number of data bytes to read Destination The data read from the EEPROM will be stored here The calling code must ensure that enough memory has been allocated to hold NumBytes of data Return The number of bytes read This will be less than NumBytes if an error occurred or if there was an attempt to read past the last address in the EEPROM eioEepromWrite Syntax unsigned int eioEepromWrite eioTHandle Handle unsigned int Address unsigned int NumBytes void Source Description Write data to the eeprom Parameters Handle The handle of the Expert I O device Address The EEPROM address at which to write NumBytes The number of data bytes to write Source The data to write into the EEPROM Rev 2 18 1 6 10 a Daj ac Inc Expert I O Software User Manual Return The number of bytes written This will be less than NumBytes if an error occurred or if there was an attempt to write past the last address in the EEPROM Motor Control This interface is used to access the motor controllers Declarations are in eio_mc h eioMcSetVelocity Syntax int eioMcSetVelocity eioTHandle Handle int Controller int Velocity Description Set the motor velocity Parameters Handle The handle of the Expert I O device Controller The controller of interest Use eioMC_ALL to simultaneously set the velocity of all
10. eioERROR An error occurred 20 1 6 10 gt Daj ac Inc Expert I O Software User Manual eioMcGetBrakeState Syntax int eioMcGetBrakeState eioTHandle Handle int Controller int BrakeState Description Get a motor controller s brake state Parameters Handle The handle of the Expert I O device Controller The controller of interest BrakeState Upon return this will be the current state of the motor controller brake Valid values are ei oON and eioOFF Return eioSUCCESS No problems eioERROR An error occurred eioMcGetCurrent Syntax int eioMcGetCurrent eioTHandle Handle int Controller double Current Description Use this function to read the amount of current being used by a motor Parameters Handle The handle of the Expert I O device Controller The controller of interest Rev 2 21 1 6 10 a Daj ac Inc Expert I O Software User Manual Current The amount of current flowing through the motor This is a count from 0 to 255 with 0 signifying no current and 255 signifying the maximum current Return eioSUCCESS No problems eioERROR An error occurred eioMcSetCurrentThreshold Syntax int eioMcSetCurrentThreshold eioTHandle Handle int Controller double Threshold Description To help prevent injury and or damage the motor controller features a current threshold If a motor s current exceeds the set thres
11. he Expert I O device Dac The analog output port to act upon Use ei oDAC_ ALL to act upon all analog outputs Clear Set to eioTRUE to activate the clear condition The analog output and all internal registers immediately go to zero The analog output will remain zero until the clear condition is removed Set to eioFALSE to release the clear condition After being released the analog output can once again be set to values other than zero Return eioSUCCESS No problems eioERROR An error occurred eioDacGetClear Rev 2 Syntax int eioDacGetClear eioTHandle Handle int Dac eioTBool Clear Description Get the current value of the analog output s clear feature 12 1 6 10 a Daj ac Inc Expert I O Software User Manual Parameters Handle The handle of the Expert I O device Dac The analog output port of interest Clear Upon return this will contain the current setting of the clear feature The clear feature can be either eioTRUE active or eioFALSE inactive Return eioSUCCESS No problems eioERROR An error occurred eioDacSetRange Syntax int eioDacSetRange eioTHandle Handle int Dac int Range unsigned int Count Description Each analog output can be set to one of several output ranges This function sets a new range for the specified analog output Parameters Handle The handle of the Expert I O device Dac The analog output port
12. hold the motor s brake is immediately activated Use this function to set the threshold Parameters Handle The handle of the Expert I O device Controller The controller of interest Use eioMC_ALL to simultaneously set the threshold for all motors to the same value Threshold The threshold will be set to this value The threshold is a count equivalent to that obtained using the ioMcGetCurrent function Value 0 is no current and 255 is maximum current Return eio SUCCESS No problems eioERROR An error occurred eioMcGetCurrentThreshold Syntax int eioMcGetCurrentThreshold eioTHandle Handle int Controller double Threshold Rev 2 22 1 6 10 a Daj ac Inc Expert I O Software User Manual Description Get a motor controller s current threshold value Parameters Handle The handle of the Expert I O device Controller The controller of interest Threshold Upon return this will be the value of the current threshold See the eioMcSetCurrentThreshold function for an explanation of how to interpret this value Return eioSUCCESS No problems ejoERROR An error occurred Status The status interface declared in eio_poll h provides status information for the Expert I O Status messages are saved in a priority queue within the Expert I O and delivered to the PC when requested Status messages are prioritized based on importance For instance multiple digital input cha
13. ion Release a device s interface Call this function after a device s interface has been claimed and is not longer needed Once freed the interface is available to be claimed again Parameters Handle A handle to the device that owns the interface to be released Return eioSUCCESS No problems eljoERROR An error occured Analog Input ADC Use the analog input interface to read analog voltages Declarations for this interface are in eio_adc h Rev 2 8 1 6 10 a Daj ac Inc Expert I O Software User Manual eioAdcReadCount Syntax int eioAdcReadCount eioTHandle Handle int Input unsigned int Count Description Read the ADC count for the given input Parameters Handle The handle of the Expert I O device to query Input The input to read Count Upon return this will hold the ADC count of the given input Return eioSUCCESS No problems eioERROR A problem occurred Analog Output DAC The analog output interface allows controlling the analog output voltages Declarations for this interface are in eio_dac h The DAC digital inputs are double buffered When controlling a DAC control values can be loaded into the input register and then shifted to the output register to make the control value active at the output Alternatively control values can be loaded into the input and output registers at the same time Output voltages are set by loading the DAC registers with values relative
14. is accessible from any programming or script language that supports DLL s A few examples are C C C Visual Basic Delphi Java Python PHP etc All functions use the __ stdcall calling convention You may freely distribute the API library eio dll with any application you create See the license agreement for complete licensing information A National Instruments LabView driver is also included in the SDK Installation To install run setup exe This will install the driver the API examples and documentation Power the Expert I O and attach the USB cable from the Expert I O to the PC The following MS Windows message will appear Found New Hardware Wizard Welcome to the Found New Hardware Wizard Windows will search for current and updated software by looking on your computer on the hardware installation CD or on the Windows Update Web site with your permission Read our privacy policy Can Windows connect to Windows Update to search for software O Yes this time only O Yes now and every time connect a device ON ne Click Next to continue Select No not this time and click Next Rev 2 3 1 6 10 a Daj ac Inc Expert I O Software User Manual Found New Hardware Wizard This wizard helps you install software for Expert 1 0 1000 C If your hardware came with an installation CD lt or floppy disk insert it now What do you want the wizard to do Oin O Install from
15. motors to the same value Velocity This is the PWM pulse width count The maximum count is MC_MAX PULSEWIDTH Positive velocity rotates the motor clockwise Negative velocity rotates the motor counterclockwise Return eioSUCCESS No problems eljoERROR An error occurred eioMcGetVelocity Rev 2 Syntax int eioMcGetVelocity eioTHandle Handle int Controller int Velocity Description Get the current motor velocity 19 1 6 10 a Daj ac Inc Expert I O Software User Manual Parameters Handle The handle of the Expert I O device Controller The controller of interest Velocity Upon return this contains the current PWM pulse width count See eioMcSetVelocity for interpretation of this value Return eioSUCCESS No problems ejoERROR An error occurred eioMcSetBrakeState Rev 2 Syntax int eioMcSetBrakeState eioTHandle Handle int Controller int BrakeState Description Set the motor controller brake state The motor stops immediately when the brake is enabled and continues at the current velocity setting when the brake is disabled Parameters Handle The handle of the Expert I O device Controller The controller of interest Use eioMC_ALL to simultaneously set the brake of all motors to the same state BrakeState The desired state of the motor controller brake Valid values are eioON and eioOFF Return eioSUCCESS No problems
16. ned int SerialNumber unsigned short Modelld char ModelString MAX MODEL STR_LEN eioTDescriptor SerialNumber is the serial number of the Expert I O ModelTd is the model ID of the Expert I O ModelString is a NULL terminated string version of the model ID This is useful when the model ID must be shown to the user Return eioSUCCESS No problems eioERROR An error occured cd 1 6 10 gt Daj ac Inc Expert 1 0 Software User Manual eioClaiminterface Syntax int eioClaimInterface eioTDescriptor Descriptor eioTHandle Handle Description Claim the interface of the device with the given descriptor The device s interface must be claimed before the device can be accessed Once a claimed interface is no longer needed it must be released If a device s interface has been claimed it can t be claimed again until it has been released Parameters Descriptor The descriptor for the device whose interface is to be claimed Handle Upon successful return this will be a handle to the specified device If unsuccessful it will be NULL Return eioSUCCESS No problems eloDEVICE NOT FOUND Could not find the requested device eioUNABLE TO CLAIM INTERFACE The device was found but its interface could not be claimed A couple possible causes are not enough memory or the interface has already been claimed eioClaiminterfaceEz Syntax int
17. nges are not going to block motor current threshold violation messages eioPollGetStatus Syntax int eioPollGetStatus eioTHandle Handle unsigned int Status unsigned int NumStatusWaiting Description Read a status messages from the specified Expert I O Parameters Handle The handle of the Expert I O device Status Upon return this will contain a status ID Valid status IDs are shown below Rev 2 23 1 6 10 EQ Dajac Inc Expert I O Software User Manual Status ID Description eioPS OK Status OK eioPS MC1 THERMAL FLAG Motor controller 0 thermal flag set eloPS MC2 THERMAL FLAG Motor controller 1 thermal flag set eloPS _ MC1 CURRENT THRESH Motor controller O threshold current exceeded eloPS_MC2 CURRENT TH ys la n HE Motor controller 1 threshold current exceeded eloPS DIO INPUT CHANGE At least one digital input changed state eloPS DIO INPUT COMM A communications error occurred while accessing the digital inputs eloPS DIO OUTPUT COMM A communications error occurred while accessing the digital outputs eloPS DIO JUMPERS COMM A communications error occurred while accessing the programmable pulls eioPS EEPROM COM Error communicating with EEPROM eioPS USB STAL
18. oDioGet eioTHandle Handle int Port unsigned char PinLevels Description Read a digital I O port This works for inputs as well as outputs Parameters Handle The handle of the Expert I O device Port The port of interest PinLevels Upon return this will contain the pin levels of the specified port Each bit corresponds to a digital I O pin A bit value of one means the pin is at a high voltage and a bit value of zero means it is at ground Return eioSUCCESS No problems eioERROR An error occurred eioDioSet Rev 2 Syntax int eioDioSet eioTHandle Handle int Port unsigned char PinLevels Description Set the output voltage levels of the specified port Parameters Handle The handle of the Expert I O device 15 1 6 10 a Daj ac Inc Expert I O Software User Manual Port The port of interest PinLevels Each pin s voltage level will be set according to the value of this parameter Each bit in PinLevels corresponds to a digital output pin A bit value of one means the pin will be set to a high voltage and a bit value of zero means it will be set to ground Return eioSUCCESS No problems eioERROR An error occurred eioDioGetPull Syntax int eioDioGetPull eioTHandle Handle int Port int Pulllevel Description Get the pull setting of the given port Parameters Handle The handle of the Expert I O device Port The port of interest PullLevel Upon succe
19. ssful return this will contain the level to which the port is being pulled See eioDioSetPull for valid pull levels Return eioSUCCESS No problems eioERROR An error occurred eioDioSetPull Syntax int eioDioSetPull eioTHandle Handle int Port int PullLevel Rev 2 16 1 6 10 a Daj ac Inc Expert I O Software User Manual Description Set the pull level of the given port Parameters Handle The handle of the Expert I O device Port The port of interest PullLevel The port s pull feature will be set to this value Valid pull levels are shown below Pull Level Description eioDIO PULL B Pull is to B eioDIO PULL B1 Pull is to B1 eioDIO PULL 3 3 Pull is to 3 3V eioDIO_PULL_GND Pull is to ground This is not a valid setting for the digital outputs eioDIO PULL NONE Pull is disabled This is not a valid setting for the digital outputs Return eioSUCCESS No problems eloERROR An error occurred EEPROM Use the EEPROM interface to access the EEPROM This interface is declared in eio_eeprom h eioEepromRead Syntax unsigned int eioEepromRead eioTHandle Handle unsigned int Address unsigned int NumBytes void Destination Description Read data from the EEPROM Rev 2 17 1 6 10 a Daj ac Inc Expert I O Software User Manual Parameters Handle The handle of the Expert I O
20. t eioProdInfoGetFirmwareVersion eioTHandle Handle eioTFirmwareVersion FirmwareVersion Description Get the Expert I O s firmware version number Parameters Handle The handle of the Expert I O device FirmwareVersion Upon return this will contain the firmware version number eioTFirmwareVersion is defined as follows typedef struct unsigned short Major unsigned short Minor unsigned short SubMinor eioTFirmwareVersion The version number is assembled as Major Minor SubMinor 25 1 6 10 a Daj ac Inc Expert I O Software User Manual Return eioSUCCESS No problems eioERROR An error occurred eioProdinfoGetFirmwareVersionEz Rev 2 Syntax int eioProdInfoGetFirmwareVersionEz eioTHandle Handle unsigned short Major unsigned short Minor unsigned short SubMinor Description Get the Expert I O s firmware version number The version number is assembled as Major Minor SubMinor Parameters Handle The handle of the Expert I O device Major Upon return this will contain the Major portion of the version number Minor Upon return this will contain the Minor portion of the version number SubMinor Upon return this will contain the SubMinor portion of the version number Return eioSUCCESS No problems ejoERROR An error occurred 26 1 6 10
21. that will be loaded into the input register Return eioSUCCESS No problems 10 1 6 10 a Daj ac Inc Expert I O Software User Manual eioERROR An error occurred eioDacInToOut Syntax int eioDacInToOut eioTHandle Handle int Dac Description Transfer the value in the input register to the output register The transferred value becomes effective at the analog output immediately Parameters Handle The handle of the Expert I O device Dac The analog output port to act upon Use ei oDAC_ ALL to act upon all analog outputs Return eioSUCCESS No problems eioERROR An error occurred eioDacGetCount Rev 2 Syntax int eioDacGetCount eioTHandle Handle int Dac unsigned int Count Description Read the value currently in the output register Parameters Handle The handle of the Expert I O device Dac The analog output port of interest Count Upon return this will contain the value currently in the output register 11 1 6 10 a Daj ac Inc Expert I O Software User Manual Return eioSUCCESS No problems eioERROR An error occurred eioDacSetClear Syntax int eioDacSetClear eioTHandle Handle int Dac eioTBool Clear Description Each analog output can be cleared When cleared the output is immediately forced to ground The output will remain at ground until the clear status is deactivated Parameters Handle The handle of t
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