Omron DeviceNet 3G8F7-DRM21-E, Руководство по эксплуатации

Страница: 110 / 149

93
Maintenance API Functions
Section 4-7
Return Value TRUE is returned if a connection has been established successfully with the
specified device. FALSE is returned if a connection has not been opened nor-
mally. Detailed error information can be read with the GetLastError() function.
Reading the Current Communications Cycle Time: SCAN_GetCycleTime()
Application Range Open status
Function Gets the present value of the communications cycle time.
Call Format BOOL SCAN_GetCycleTime(DWORD Handle , WORD * CycleTime )
Arguments
Return Value TRUE is returned if the communications cycle time was read successfully
from the specified Board. FALSE is returned if an error occurred. Detailed
error information can be read with the GetLastError() function.
Description The present value of the communications cycle time will be stored in ms.
Reading the Maximum Communications Cycle Time: SCAN_GetMaxCycleTime()
Application Range Open status
Function Gets the maximum value of the communications cycle time.
Call Format BOOL SCAN_GetMaxCycleTime(DWORD Handle , WORD * CycleTime )
Arguments
Return Value TRUE is returned if the maximum communications cycle time was read suc-
cessfully from the specified Board. FALSE is returned if an error occurred.
Detailed error information can be read with the GetLastError() function.
Description The maximum value after the SCAN-ClearCycleTime() function is executed,
power is turned ON, or the Board is reset is held as the maximum communi-
cations cycle time.
Reading the Minimum Communications Cycle Time: SCAN_GetMinCycleTime()
Application Range Open status
Function Gets the minimum value of the communications cycle time.
Call Format BOOL SCAN_GetMinCycleTime(DWORD Handle , WORD * CycleTime )
Arguments
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
WORD * CycleTime Buffer address for receiving the present value for the
communications cycle time.
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
WORD * CycleTime Buffer address for receiving the maximum communi-
cations cycle time.
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
WORD * CycleTime Buffer address for receiving the minimum communi-
cations cycle time.