Ladder Diagram (LAD) and Function Block Diagram (FBD)

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LOGO!Soft Comfort provides you with two options of creating circuit programs:

Who will use the ladder diagram (LAD)?

Users who are used to working with circuit diagrams.

Who will use the function block diagram (FBD)?

Users who are familiar with the logic boxes of Boolean algebra.

Differences between LAD and FBD in the online help

The online help primarily describes the FBD Editor, because its functionality is closely related to that of the LAD Editor. Where LAD differs, the online help will describe the differences. The following symbol in the online help indicates a difference in LAD and FBD functionality:

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Converting circuit programs

Information on the conversion of circuit programs from LAD to FDB is found here.

Information on the conversion of circuit programs from FBD to LAD is found here.

Switching between LAD and FDB

Information on this topic is found here.