7
COMMUNICATION USING BUILT-IN ETHERNET
PORTS OF CPU MODULE
7.6 File Transfer Function (FTP)
7 - 23
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
7.6 File Transfer Function (FTP)
The Built-in Ethernet port QCPU supports the FTP (File Transfer Protocol) server function.
FTP is a protocol for transferring files between CPU modules and external devices.
An external device with a FTP client function can simply access to files within the CPU
module directly by using this FTP server function.
The following accesses can be performed to files in the Built-in Ethernet port QCPU from
an external device with a FTP client function.
(a) Reading (downloading) files from Built-in Ethernet port QCPU
A function for storing CPU module files in an external device.
(b) Writing (uploading) files to Built-in Ethernet port QCPU
A function for registering files stored in an external device to the CPU module.
(c) Browsing Built-in Ethernet port QCPU file names
A function for checking files registered in the CPU module on the external device
side.
POINT
In a multiple CPU system, only the CPU module connected with an Ethernet cable
can transfer files.
Figure 7.23 File transfer function (FTP)
Storage file
Programmable controller CPU (FTP server)
External device (FTP client)
Read
Write
Ethernet
QCPU
Parameter
Program
Data
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