Write is used to write a part of the file starting from the current file position. The file position is advanced by the number of bytes written.

Signature

Write(

[in] UInt32 fileHandle

[in] ByteString data

);

Argument

Description

fileHandle

A handle indicating the access request and thus indirectly the position inside the file.

data

Contains the data to be written at the position of the file. It is server-dependent whether the written data are persistently stored if the session is ended without calling the Close Method with the fileHandle.

Writing an empty or null ByteString returns a Good result code without any affect on the file.

Method Result Codes (defined in Call Service)

Result Code

Description

Bad_InvalidArgument

See OPC 10000-4 for a general description. Invalid file handle in call.

Bad_NotWritable

See OPC 10000-4 for a general description. File might be locked and thus not writable.

Bad_InvalidState

See OPC 10000-4 for a general description. File was not opened for write access.

Table 5 specifies the AddressSpace representation for the Write Method.

Table 5 – Write Method AddressSpace definition

Attribute

Value

BrowseName

Write

References

NodeClass

BrowseName

DataType

TypeDefinition

ModellingRule

HasProperty

Variable

InputArguments

Argument[]

PropertyType

Mandatory

Conformance Units

Base Info FileType Base