Device properties are stored in the system and read by the driver when it loads, and then the device is programmed according to these loaded values. The properties are protected during read and write access times, and some of them are pre-defined by the configuration dialog box. Different device's functions are influenced by different properties. These properties are represented by an ID code for an application that calls Advantech API functions. An application can use a default value set by the configuration dialog box, or call Advantech API functions: DRV_DeviceGetProperty and DRV_DeviceSetProperty, to modify individual properties in running time.
PCI-1718HDU/HGU supports the following properties:
| Property | Description |
| CFG_BoardID | gets the board ID of the device. |
| CFG_BaseAddress | gets the base address of the currently installed PCI-1718HDU/HGU. |
| CFG_Interrupt | gets the IRQ of the currently installed PCI-1718HDU/HGU. |
| CFG_BusNumber | gets bus number of the currently installed PCI-1718HDU/HGU. |
| CFG_SlotNumber | gets the slot number of the currently installed PCI-1718HDU/HGU. |
| CFG_AiChanConfig | sets or gets the current configuration of PCI-1718HDU/HGU AI Channel:0, Single ended ;1, differential. |
| CFG_AiPacerRate | sets or gets the current pacer rate of PCI-1718HDU/HGU AI operation. |
| CFG_DiChannelCount | gets the total count of DI channels. |
| CFG_DoChannelCount | gets the total count of DO channels. |
| CFG_DiPortCount | gets the total count of DI ports. |
| CFG_DoPortCount | gets the total count of DO ports. |
| CFG_AiTimerClock | AI base clock freq value. |
| CFG_CntrInternalClockFreq | gets the internal clock frequency. |