Ethernet Communication Function; Ftp Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.2

Ethernet Communication Function

FTP function

The server function of FTP(File Transfer Protocol), which is a protocol used to transfer files with target devices, is supported.
The target device with FTP client function can access the files in the C intelligent function module.
File operation
The following operations can be performed for a file in a C intelligent function module from a target device with the FTP client
function.
Reading file (Download)
Use this when storing a file in a C intelligent function module on the target device side.
Writing files (Upload)
Use this when registering a file stored on the target device side to a C intelligent function module.
Browsing and deleting files and folders
Use this when browsing and deleting a file and folder in a C intelligent function module from the target device side.
Using FTP function
For using the FTP function, the service/account needs to be set.
Page 33 Service/account setting function
Users for file transfer function can be restricted by using user information (account settings).
Account setting
This shows account settings set prior to the shipment (Initial settings).
• Login name: target
• Password: password
To prevent unauthorized access, change the password when using the FTP function.
Precautions
Specifications of FTP client
• For the specifications of the FTP client installed on the target device, refer to the manual of the target device.
• Do not use an FTP access function with the Windows standard explorer. Doing so may cause that the file update time on
the explorer does not match the time of the control CPU module, or that the file is displayed in the previous state even after
it is overwritten.
Operation while accessing file
Do not perform any of the following operations while accessing the file. The file may get damaged.
• Reset the CPU module, or turn the power OFF.
• Insert/remove an SD memory card.
Reconnection after timeout
If a timeout error occurred during file transfer, the TCP connection will be closed (disconnected).
Log in to the C intelligent function module again with the FTP client before restarting the file transfer.
File transmission time
The file transfer processing time will differ depending on the following causes.
• Load rate of Ethernet line (line congestion)
• Number of connections to be used simultaneously (processing of other connections)
• System Configuration
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1.2 Ethernet Communication Function
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