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6. Programming Information
6.8 Program execution sequence
The instructions execution sequence is shown below.
(1)They are executed in the sequence from block 1 through the final block, which contains the END instruction (or IRET in an interrupt program).
(2)They are executed in the sequence from rung 1 through the final rung in a block (or the END instruction).
(3)They are executed according to the following rules in any one rung.
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? | When there is an OR | 1 | 2 | 4 | 6 | 7 | |
connection, the OR logic |
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portion is executed first. |
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When there is a branch, they | 1 | 2 | 3 |
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are executed in the order from |
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the upper line to the lower line. |
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A combination of | and | 1 | 3 | 4 |
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above. | A | 2 |
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The ABinstructions execution@sequence in which function instructions are included also follows the above rules. However, for program execution control instructions, such as jumps (JCS), loops
Basic Hardware and Function 99
