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

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Board Management API Functions
Section 4-3
Return Value TRUE is returned if the DeviceNet PCI Board with the specified board ID was
opened successfully. FALSE is returned if an error occurred or there is not a
Board with the specified board ID. Detailed error information can be read with
the GetLastError() function.
Description The Board must be open before it can be used.
Each Board can be opened from one application (process) only.
The Board ID is the value set using the rotary switch on the Board.
Closing the Board: SCAN_Close()
Application Range Open status
Function Closes the specified device handle and makes the Board unusable.
Call Format BOOL SCAN_Close(DWORD Handle )
Arguments
Return Value TRUE is returned if the specified device handle was closed successfully.
FALSE is returned if an error occurred. Detailed error information can be read
with the GetLastError() function.
Description When this function is executed, the device handle is released, the Board is
reset, and all set information is cleared. Perform any end processing for the
application before executing this function.
Joining the Network (Online): SCAN_Online()
Application Range Offline status
Function Adds the specified DeviceNet PCI Board to the network and puts it in online
status.
Call Format BOOL SCAN_Online(DWORD Handle , WORD Macld , WORD BaudRate )
Arguments
Return Value TRUE is returned if the specified Board was successfully switched to online
status. FALSE is returned if an error occurred. Detailed error information can
be read with the GetLastError() function.
Description It takes approximately 3 seconds for online processing to be completed.
FALSE is returned and the Board is not switched to online status in the follow-
ing cases. Use GetLastError() to find the source of the error, clear the error,
and execute the function again.
• Bus OFF error
• Node address duplication
• Network power supply error
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
Type Name Contents
DWORD Handle Device handle obtained by SCAN_Open()
WORD Macld Node address setting for the Board
Setting range: 0x00 to 0x3F (0 to 63)
WORD BaudRate Communications speed setting for the Board
Setting range: ONLINE125K(0): 125 kbps
ONLINE250K(1): 250 kbps
ONLINE500K(2): 500 kbps