B&B Electronics I3A12X_20B05-SOHF - Manual - Manual (Page 9)

Basic Ladder Logic
Using Ladder logic it is necessary to insert a contact in the first column. A good
practice is to insert an ALWAYS ON (ALW_ON) contact at the beginning then add
your logic after.
Rung is
complete
Rung not complete. The
program logic will fail to
compile and Download.
A common error message will appear if no screen
has been configured.
An initial screen must be configured before the
program can be successfully downloaded to the
i 3
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