Phoenix Contact RFC 4072S, User Manual, Page: 172 / 272

RFC 4072S
172 / 272
PHOENIX CONTACT 108580_en_02
7.8 Function blocks for handling files on the parame-
terization memory
The function blocks are used to access files from within the application program. Some of
the blocks support multiple instantiation. This means that it is possible to work with a number
of different files within the same project. The blocks perform the standard functions that are
required for typical file access operations.
All file operations are subject to the following restrictions:
No directory hierarchies are supported. All file operations only affect the root directory of
the parameterization memory.
Table 7-1 Overview of the function blocks
Function block Short description
FILE_OPEN Opens a file with a specific name
FILE_CLOSE Closes a file with a specific handle
FILE_READ Reads from a file with a specific handle
FILE_WRITE Writes to a file with a specific handle
FILE_REMOVE Deletes a file with a specific name
FILE_TELL Determines the current position of the file pointer in a file
FILE_SEEK Moves the current file pointer to a new position
The function blocks for handling files on the parameterization memory are described in
the PLCnext Engineer online help.