Function block diagram PLC programs execute by inputting all input variable values and then evaluating the blocks starting with the blocks on the far right.

Name: Function block diagram PLC programs execute by inputting all input variable values and then evaluating the blocks starting with the blocks on the far right.
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Function block diagram (FBD) PLC programs execute by evaluating the blocks from left to right, similar to reading a book, where the output of one block can be the input to the next.

Function Block Diagram PLC Programs Execute by Inputting All Input