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

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Master Function API Functions
Section 4-4
Stopping Remote I/O Communications: SCAN_StopScan()
Application Range I/O communications execution status
Function Stops remote I/O communications.
Call Format BOOL SCAN_StopScan(DWORD Handle )
Arguments
Return Value TRUE is returned if remote I/O communications stopped normally in the spec-
ified Board. FALSE is returned if an error occurred, such as the lack of a cor-
responding event. Detailed error information can be read with the
GetLastError() function.
Writing the Communications Cycle Time: SCAN_SetScanTimeValue()
Application Range Open status
Function Sets the communications cycle time.
Call Format BOOL SCAN_SetScanTimeValue(DWORD Handle , WORD ScanTime )
Arguments
Return Value TRUE is returned if the communications cycle time was set successfully.
FALSE is returned if an error occurred. Detailed error information can be read
with the GetLastError() function.
Description The default communications cycle time is automatic (maximum). The commu-
nications cycle time for the automatic setting is calculated using the formula
listed in
6-1-1 Communications Cycle Time .
If a value shorter than the communications cycle time used under the auto-
matic setting is set, the set value changes to that specified value but the
actual communications use the communications cycle time from the auto-
matic setting.
Reading the Communications Cycle Time: SCAN_GetScanTimeValue()
Application Range Open status
Function Reads the set communications cycle time.
Call Format BOOL SCAN_GetScanTimeValue(DWORD Handle , WORD* ScanTime )
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
WORD ScanTime Communications cycle time (ms)
Setting range:
0x000 (0): Automatic (Always executed at the fastest
speed.)
0x0001 to 0x01F4 (1 to 500): 1 to 500 ms