Instructions

Doc: HMSI-27-314, Rev. 3.10Anybus Communicator EtherNet/IP / Modbus-TCP User Manual
Chapter 3
3. File System
3.1 General
General
The Anybus Communicator features a built-in file system, which is used to store information such as
web files, network communication settings, e-mail messages etc.
Storage Areas
The file system consists of the different storage areas:
• Non-volatile area (approx. 1.4 Mb)
This section is intended for static files such as web files, configurations files etc.
• Volatile area (approx. 1 Mb)
This area is intended for temporary storage; data placed here will be lost in case of power loss or
reset.
Conventions
• ‘\’ (backslash) is used as a path separator
• A ‘path’ originates from the system root and as such must begin with a ‘\’
• A ‘path’ must not end with a ‘\’
• Names may contain spaces (‘ ‘) but must not begin or end with one.
• Names may not contain the following characters: ‘\ / : * ? “ < > |’
• Names cannot be longer than 48 characters (plus null termination)
• A path cannot be longer than 256 characters (filename included)
• The maximum number of simultaneously open files is 40
• The maximum number of simultaneously open directories is 40
Important Note:
The non-volatile storage is located in FLASH memory. Each FLASH segment can be erased approxi-
mately 100 000 times.
The following operations will erase one or more FLASH segments:
• Deleting, moving or renaming a file or directory
• Writing or appending data to an existing file
• Formatting the file system