Ethernet Communication Function; Ftp Function - Mitsubishi Electric MELSEC iQ-R C 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.
■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
1 FUNCTION
1.2 Ethernet Communication Function
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