Function Description
Every Advantech DLL function is of the following form:
status = DRV_Xxx(parameter 1, parameter 2, ..., parameter n);
(at least one parameter is contained)
Each function returns a status (Success or Failure) as following:
| Status (Value) |
Result |
| UNSUCCESS ( > 0 ) |
Function failed due to error |
| SUCCESS ( = 0 ) |
Function completed successfully |
Status is a 4-byte integer and is defined in DRIVER.H file.
For more information about the error code, please refer to ErrorCode list.
Functions supported by USB-4751:
Device functions
DRV_DeviceOpen
DRV_DeviceClose
DRV_DeviceGetProperty
DRV_DeviceSetProperty
Digital Input/Output
DRV_DioReadDiPorts
DRV_DioWriteDoPorts
DRV_DioReadDoPorts
Counter Functions
DRV_CounterEventRead
DRV_CounterEventStart
DRV_CounterFreqStart
DRV_CounterFreqRead
DRV_CounterPWMSetting
DRV_CounterPWMEnable
DRV_CounterPulseStart
DRV_FreqOutStart
DRV_FreqOutReset
DRV_CounterReset
High-speed Functions
DRV_CheckEvent
DRV_EnableEvent
Other Functions
DRV_GetErrorMessage