Sys Tec Electronic USB-CANmodul - USBCAN32.DLL Function Error Codes

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SYS TEC electronic GmbH 2001 L-487e_6

3.2.3

Error Codes of the Functions

The functions of the USBCAN32.DLL return an error code with the

type of a BYTE. Each return value represents an error. The only

exception is the function UcanReadCanMsg () which can also return

warnings. The warning USBCAN_WARN_NODATA indicates that no

CAN messages are in the buffer. Other warnings show the calling

function that an event has occurred but a valid CAN message is

transferred.

All possible return codes for the functions of the USBCAN32.DLL

are listed below:

USBCAN_SUCCESSFUL

Value: 0x00

Description:

This message returns if the function is executed successfully.

USBCAN_ERR_RESOURCE

Value: 0x01

Description:

This error message returns if one resource could not be

generated. In this case the term resource means memory and

handles provided by Windows.