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Parker Automation Controller
PAC120
5.4 System Functions
5.4.1 FTP-Server
Run the FTP server of PAC120 to allow an FTP client to access the controller. Refer to section 5.3.2.5 menu Item
"FTP server". FTP lets you exchange recipe data with the control unit, for example.
File System and Folder Tree
Most of the control unit's file system folders and files can either not be accessed or just read by the user. To be able
to use certain control unit functions, however, there are some directories that end users have write and use access to.
Folder
/flash
/flash/plc
/flash/plc/applications
/flash/plc/applications/fonts
/flash/ftpupload
/media/sd
/media/usb1
5.4.2 Service Mode
Service mode differs from normal operation in the following points:
•
CODESYS V3 Runtime will not run, i.e. no control program will be running.
•
The factory defaults will be loaded when configuring the network to ensure that every control unit can be ad-
dressed by a unique IP address. Refer to section 5.3.2.1 to learn more about this kind of network configuration.
•
Underneath the name of the control unit, the web interface will display "(maintenance)" instead of "(plcactive)".
Service mode is enabled by turning off PAC120. Now press and hold the button to restart PAC120. Keep pressing
the button until Run/Stop lights up yellow every 2 seconds.
5.4.3 Installing more Fonts
By default, DejaVu series fonts are installed. If you wish to use other fonts such as Windows fonts for your WebVi-
su or TargetVisu visualisations, you may copy any set of Truetype fonts (*.ttf) to folder "/flash/plc/applications/fonts/"
and use them afterwards.
If you have not used any own fonts yet, you will have to create this folder once. We recommend running the control
unit's FTP server application and downloading the fonts into the control unit via FTP.
Attention: For system reasons, you will have to use lowercase letters for the font file extension because the system
will otherwise fail to recognize the file and you may have to rename the file. For example, be sure Arial unicode font
file is called "ARIALUNI.ttf". The control unit will not recognize "ARIALUNI.TTF" or "ARIALUNI.Ttf".
Attention: You can choose to use the on-board or additional fonts. To make parallel use of your own and the on-
board DejaVu fonts, first of all download the DejaVu fonts from directory "/var/lib/fonts" or via the web interface and
upload them to folder "/flash/plc/applications/fonts/" together with your own fonts.
Note
Many fonts you may know from daily PC use are subject to a license! Arial, for example, is a Microsoft font covered by your Win-
dows license. Before using alternative fonts, please verify that they non-licensed freeware or that you own the license.
44
Description
Unit's internal flash memory
CODESYS V3 root directory. Also mounted at /home/plc.
Location of the CODESYS V3 application
Location of some fonts which needs to be created once if you intend to use your own fonts.
FTP users root. Use this as your default directory for files downloaded or
uploaded via FTP.
External flash memory (SD card); only available if a SD card is used.
External USB memory; only available if a storage medium has been plugged in.
Operation
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