============================================================================
=                               df1 1.0.0                      23/01/2003  =
============================================================================


======================================
 Author
======================================
Author: Stephane LEICHT
e-mail: stephane.leicht@gmail.com


======================================
 Requirements
======================================
a SLC500 or micrologix connected on the serial port.


======================================
 Install
======================================

  Compilation: make

  install :      copy df1 in /usr/bin
                 copy df1d in /etc/init.d

======================================
 Features
======================================
        This program is a daemon to communicate with ethernet TCPIP from programmable logic
controller SLC500 and MicroLogix ALLEN-BRADLEY connected on the serial port (df1).

======================================
Licence
======================================
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

======================================
 Getting started
======================================
       start df1 daemon with the script df1d > /etc/init.d/df1d start

       open a telnet session > telnet localhost 17560

       read integer value in SLC500 >   N7:1
       write integer value in SLC500 >  N7:1=456
                                        T4:0.PRE=15

       read float value in SLC500 >     F8:5
       write float value in SLC500 >    F8:2=-3.14
                                        F8:1=5E-4
                                        F8:0=7.001

       read boolean value in SLC500 >   B3:0/5
                                        T4:0.dn
       write boolean value in SLC500 >  B3:0/5=1
                                        B3:0/4=0

       you can view logs in /var/log/syslog.