Ladder Logic VS. Functional Block Diagrams, Comparison of Methods
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Mar 27 2012, 01:31 PM
Joined: 12-March 12
Member No.: 13,823
Can you do everything using ladder logic that you can do using FBD?
Can you do everything using FBD with SFC's that you can do using FBD without SFC's?
I generally have repetitive processes that essentially move from top to bottom (i.e. using SFC's) with inputs and timing all along the way.
I do not yet know ladder logic, but I have tinkered around with FBD for a while. I am no expert using FBD whatsoever. I am just wondering if there is a preferred method.
Apr 4 2012, 11:09 AM
Group: Authorized Member
Joined: 26-June 09
Member No.: 6,956
Ladder language is limited in the case of the Millenium 3. There are certain things that you can not do:
As for SFC, you certainly can do sequential operations using standard function blocks but SFC makes it a lot easier.
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