Welcome to i.CanDrawIt® graphical programming
for Building Automation and Facility Management.

i.CanDrawIt® Ladder Logic Library (Note that symbols from the math library or other libraries can be combined with ladder logic symbols.)

 Provides left rail for ladder logic diagram.
Provides right rail for ladder logic diagram.
Normally open contact, reads on/off state from I/O object given, and performs logical AND of connection to the left, and state of I/O.
Normally closed contact, reads on/off state from I/O object given. State is read inverted. Block performs logical AND of connection to the left, and inverted state of I/O.
Writes value of data coming in from the left out to the I/O object given. The connection to the right is a dummy pin that results in creation of a variable for debugging, and also for completion of the graphical representation of the ladder.
Performs logical OR of signals from left and down, providing result at pin to the right.
Performs logical OR of signals from left and down, providing result at upward pin.
Performs logical OR of signals from left and up, providing result at pin to the right.