Jetter JC-120MC, Руководство пользователя

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162 Jetter AG
8 FTP client
8.1 Programming
The FTP client allows to access files and directories on a network device from
within the application program. For this purpose, function calls are used.
These function calls are included in the programming language of the
controller. To program this feature, proceed as follows:
Step Action
1
Initialize the FTP client
2 Open the connections to the FTP servers
3
Transfer data
4
Terminate the connections
While the controller is processing one of the functions of the FTP client, tasks
supporting the FTP client should not be stopped through
TaskBreak
or
restarted through
TaskRestart
. Otherwise the controller fails to complete this
function which will block new function calls by the FTP client.
Topic Page
Initializing the FTP client ............................................................................. 163
Establishing a connection to the FTP server .............................................. 164
Terminating a connection ............................................................................ 166
Reading a file .............................................................................................. 167
Writing to a file ............................................................................................ 169
Deleting a file .............................................................................................. 171
Changing directories ................................................................................... 173
Creating a directory ..................................................................................... 175
Deleting directories ..................................................................................... 177
Determining the current directory ............................................................... 179
Introduction
Restrictions
Contents