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.TH CLASSICLADDER "9" "2008-11-23" "LinuxCNC Documentation" "HAL Component" 
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.SH NAME
classicladder \- realtime software plc based on ladder logic
.SH SYNOPSIS
\fBloadrt classicladder_rt  [numRungs=\fIN\fB] [numBits=\fIN\fB] [numWords=\fIN\fB] [numTimers=\fIN\fB] [numMonostables=\fIN\fB] [numCounters=\fIN\fB] [numPhysInputs=\fIN\fB] [numPhysOutputs=\fIN\fB] [numArithmExpr=\fIN\fB] [numSections=\fIN\fB] [numSymbols=\fIN\fB] [numS32in=\fIN\fB] [numS32out=\fIN\fB]

.SH DESCRIPTION
These pins and parameters are created by the realtime \fBclassicladder_rt\fR module. Each period (minimum 1000000 ns), classicladder reads the inputs, evaluates the ladder logic defined in the GUI, and then writes the outputs.

.SH PINS

.TP
\fBclassicladder.0.in-\fIN\fB\fR IN bit 
These bit signal pins map to \fB%I\fINNN\fR variables in classicladder

.TP
\fBclassicladder.0.out-\fIN\fB\fR OUT bit 
These bit signal pins map to \fB%Q\fInNN\fR variables in classicladder
Output from classicladder

.TP
\fBclassicladder.0.in-\fIN\fB\fR IN s32
Integer input from classicladder
These s32 signal pins map to \fB%IW\fINNN\fR variables in classicladder

.TP
\fBclassicladder.0.out-\fIN\fB\fR OUT s32 
Integer output from classicladder
These s32 signal pins map to \fB%QW\fINNN\fR variables in classicladder

.SH PARAMETERS

.TP
\fBclassicladder.0.refresh.time\fR RO s32
Tells you how long the last refresh took

.TP
\fBclassicladder.0.refresh.tmax\fR RW s32
Tells you how long the longest refresh took

.TP
\fBclassicladder.0.ladder-state\fR RO s32
Tells you if the program is running or not
.SH FUNCTIONS

.TP
\fBclassicladder.0.refresh\fR FP 
The rung update rate. Add this to the servo thread.
You can added it to a faster thread but it
Will update no faster than once every 1 millisecond (1000000 ns).

.SH BUGS
See http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ClassicLadder_Ver_7.124 for the latest.

.SH SEE ALSO
\fIClassicladder\fR chapters in the LinuxCNC documentation for a full description of the \fBClassicladder\fR syntax and examples

http://wiki.linuxcnc.org/cgi-bin/wiki.pl?ClassicLadder_Ver_7.124