5 - 1 5 - 1
MELSEC-Q
5 WHEN USING FILE TRANSFER FUNCTIONS (FTP SERVER)
5 WHEN USING FILE TRANSFER FUNCTIONS (FTP SERVER)
Files in the local station QCPU to which the Ethernet module is installed can be read
and written from external device using the Ethernet module file transfer function.
In this chapter, how to use (command) the Ethernet module FTP function from external
device (personal computer, workstations, etc.) is explained.
POINT
The access destination of files handled using the file transfer function is the local
station QCPU in the station to which the Ethernet module is installed.
Specify an access target CPU if the local station QCPU is included in a multiple
CPU system.
5.1 File Transfer Functions
The file transfer functions (hereinafter called FTP server) of the Ethernet module, to
perform read/write to the files in the QCPU from a external device side is explained.
The Ethernet module supports the FTP (File Transfer Protocol) server function, which
uses the protocol to transfer files between external devices. It functions as the file
server for the files in the QCPU.
The FTP commands are used to direct data transfers in file units.
The external device with the FTP client functions, can easily access (read/write) the user-
created files in the QCPU directly using the Ethernet module FTP server functions.
1) Reading a file from the QCPU (download)
Reading function for storing the QCPU files in the external device.
2) Writing a file to the QCPU (upload)
Writing function for registering the file in the external device to the QCPU.
3) Scanning QCPU files
Scanning function for checking the files registered in the QCPU, from the external
device.
With these Ethernet module FTP server functions, all user files in the QCPU
(parameters, sequence programs, and data files) can be accessed using the
FTP commands from the external device.
Ethernet
module
QCPU
Parameter
Program
Data
Storage file
PLC CPU (FTP server)
External device (FTP client)
Read
Write
Ethernet
5
Содержание QJ71E71-100 Series
Страница 2: ......
Страница 214: ...6 65 6 65 MELSEC Q 6 DEDICATED INSTRUCTIONS MEMO ...
Страница 219: ......