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Chapter 3 Functions

6F8C1657

3.3.1 VmsCreateFile

Interface

VmsCrateFile – Get a handle to access each memory

Prototype

HANDLE VmsCreateFile(DWORD how, void *p);

Description

As the first argument, specify 0 indicating the data type DWORD

specified by the second argument.

For the second argument, pass a DWORD type pointer whose value

is the slot number to be accessed.

Slot 1 : PLC / DCS

Slot 2 : PLC

Slot 3 : Windows

Slot 11 : PLC

Slot 12 : PLC

Slot 13 : Windows

Return value

Normal return is a file handle.

Abnormal return is zero.

◆

Note

If the argument is correct but the return value is zero, Windows access control may be

working. In that case, run the application with administrator privileges to get the file handle.

◆

Note

Slot number 11, 12, 13 are for B side PUB of the multi base unit configuration.

"VmsGetMultiType" is used to determine which PUB on the A side and the B side application

is carried out in.

3.3.2 VmsCloseHandle

Interface

VmsCloseHandle – Release a handle

Prototype

BOOL VmsCloseHandle(HANDLE hDevice);

Description

Release the handle taken with VmsCreateFile.

Return value

Normal return is TRUE.

Abnormal return is FALSE.

Toshiba Vm Series Operating Instructions (Functional Manual)

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