README - Last Revised March 12, 2001


ABOUT:
These programs constitute a variety of access tools for the LPC. All of these are also accompanied by html files that set their context. If some or all of these are copied into a directory that is available on the web, they can be used by others off site to access the LPC. All of these right now require that the 'lpcd.so' module be loaded to process the web requests. Care is also required to ensure that the service port on both the LPC and the html pages match.

The main programs are listed below by their html front page.

LPCconnect.html - this provides a client that can connect to the LPC and pass basic commands
LPCedit.html - a ladder logic editor (not working right now because of changes)
LPCeditlocal.html - a ladder logic editor used for editing local files
LPChmi.html - an HMI to be run over the web
LPChmilocal.html - an HMI that runs from the local harddrive
lpcd.html - a full web page that pulls it all together



NOTES:
The shifting security model and feature model of Java makes some of these applets not work in certain conditions.

- The LPCedit*.html programs require the swing components. These are a standard part of Java2, but a special plugin is required for Java 1.1 or lower. In browsers, Netscape6 is the only one that supports this natively.
- Some newer Java implementations in browsers are using very strict security models. This means that on Netscape6 they will not allow network access without jumping through a few hoops.
- The best way to run the applets is with appletviewer, although this is less desirable for longterm applications.