From the course: PLC Sequencer Logic
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Illustrate operation of SQL - Ladder Logic Tutorial
From the course: PLC Sequencer Logic
Illustrate operation of SQL
- [Instructor] Here's an example to illustrate the operation of the sequencer load instruction. Here, the instruction length is eight, so eight values moves from the source to the file. The source is input two and the data move to file N7. Eight words taken from N7 word zero to N7 word eight. On each full citral transition author on the sequencer load instruction position is incremented by one. In the table you see on the screen, you see that the source value is getting moved to position five. When the instruction has reached position eight the length value, the done bit is set. When the instruction has operated to the last position and has a true to false transition it resets to position one. So in this case, on the next full citral transition, the instruction recycles to position one and the value of the input is moved into that location overriding whatever it has. So we need to keep that in mind when programming. The size…
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